Commit Graph

44028 Commits

Author SHA1 Message Date
Sergey Biryukov
40ff2751bc Docs: Add missing @since tags for some WP_Theme_JSON methods.
Docs: Update syntax for multi-line comments per the documentation standards.

Follow-up to [50959], [50967], [50973], [51051], [51089], [51149].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51283


git-svn-id: http://core.svn.wordpress.org/trunk@50892 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 16:23:57 +00:00
Sergey Biryukov
b10b4a2586 Docs: Adjust wp_dashboard_browser_nag() DocBlock per the documentation standards.
Follow-up to [51117], [51119], [51120].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51282


git-svn-id: http://core.svn.wordpress.org/trunk@50891 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 16:07:57 +00:00
Sergey Biryukov
7884c33821 Docs: Add @ticket references to some WP_Theme_JSON tests.
Follow-up to [50973], [51054].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51281


git-svn-id: http://core.svn.wordpress.org/trunk@50890 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 15:59:58 +00:00
Sergey Biryukov
598c337f4b Docs: Add missing @since tags for some REST API methods added in 5.8.
Follow-up to [50995], [51021].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51280


git-svn-id: http://core.svn.wordpress.org/trunk@50889 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 13:58:59 +00:00
Sergey Biryukov
a2f00a677c Docs: Document the globals used in WP_REST_Widget_Types_Controller and WP_REST_Widgets_Controller.
Follow-up to [50995].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51279


git-svn-id: http://core.svn.wordpress.org/trunk@50888 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 12:55:57 +00:00
Sergey Biryukov
d72eb14abf Docs: Document the globals used in some REST API methods.
See #53399.
Built from https://develop.svn.wordpress.org/trunk@51278


git-svn-id: http://core.svn.wordpress.org/trunk@50887 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 12:34:56 +00:00
Sergey Biryukov
ffafbefc36 REST API: Allow multiple widgets to be deleted in a single batch request.
This resets the `WP_Widget::$updated` flag when deleting a widget, to avoid blocking all future updates in a request.

Props noisysocks, andraganescu.
Fixes #53557.
Built from https://develop.svn.wordpress.org/trunk@51277


git-svn-id: http://core.svn.wordpress.org/trunk@50886 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 10:41:58 +00:00
Peter Wilson
4c598d36b1 Query: Check each post-type's capabilities when querying multiple post-types.
When querying multiple post types, check the `read_private_posts` capability for each post type when determining which post statuses to return. This ensures private posts appear in search results and archives for users permitted to read them.

Props leogermani, hellofromTonya, jeffpaul, peterwilsoncc.
Fixes #48556.


Built from https://develop.svn.wordpress.org/trunk@51276


git-svn-id: http://core.svn.wordpress.org/trunk@50885 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 05:00:56 +00:00
desrosj
7344160c11 Security: Add 5.8 to the list of versions receiving security updates.
Built from https://develop.svn.wordpress.org/trunk@51274


git-svn-id: http://core.svn.wordpress.org/trunk@50883 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 04:02:57 +00:00
desrosj
a610e9675b Build/Test Tools: Add the 5.8 branch to the workflow for testing branches.
Built from https://develop.svn.wordpress.org/trunk@51273


git-svn-id: http://core.svn.wordpress.org/trunk@50882 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 03:58:58 +00:00
desrosj
4f26a88360 Post branching 5.8 version bump.
`trunk` is now `5.9-alpha`.
Built from https://develop.svn.wordpress.org/trunk@51272


git-svn-id: http://core.svn.wordpress.org/trunk@50881 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 03:55:56 +00:00
desrosj
2c1f2bf1e4 Post WordPress 5.8 RC1 version bump.
Built from https://develop.svn.wordpress.org/trunk@51270


git-svn-id: http://core.svn.wordpress.org/trunk@50879 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 03:44:58 +00:00
desrosj
77d0f6114f WordPress 5.8 RC1.
Built from https://develop.svn.wordpress.org/trunk@51269


git-svn-id: http://core.svn.wordpress.org/trunk@50878 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 03:16:56 +00:00
desrosj
8c3e1e9aa8 Build/Test Tools: Revert [51259-51256,51265].
[51259] introduced a PHP notice that was not actually fixed by [51265]. Reverting these changes in order to investigate further.

See #53397.
Built from https://develop.svn.wordpress.org/trunk@51268


git-svn-id: http://core.svn.wordpress.org/trunk@50877 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 02:14:56 +00:00
desrosj
e7387a9ace Script Loader: Fix PHP notice caused by the viewScript for the core/file block.
This fixes a PHP notice caused by the `viewScript` for the `core/file` block having `.min.js` instead of just `.js`.

`register_block_script_handle()` was incorrectly looking for `view.min.asset.php`, which does not exist, and caused the `_doing_it_wrong()` notice.

This adds a check for `.min.js` in the `viewScript` field of `block.json` and corrects it to `.js` in order to match the expected pattern of `view.asset.php` until a more permanent fix can be created.

Follow up to [51259].

Props ipstenu, pbiron, peterwilsoncc.
See #53397.
Built from https://develop.svn.wordpress.org/trunk@51267


git-svn-id: http://core.svn.wordpress.org/trunk@50876 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 01:46:57 +00:00
Peter Wilson
1b7cd950ca Upgrade/Install: Notify users of deactivated plugins during upgrade.
This adds a one-off notice to the dashboard in the event WordPress has automatically deactivated a plugin due to incompatibility with the new version of WordPress.

Introduces the new private function `deactivated_plugins_notice()` to display the notice in the dashboard. Introduces the new auto-loaded option `wp_force_deactivated_plugins` to store a list of automatically deactivated plugins; the option is used on both a site and network level.

Follow up to [51180].

Props desrosj, jorbin, azaozz, SergeyBiryukov, peterwilsoncc.
See #53432.


Built from https://develop.svn.wordpress.org/trunk@51266


git-svn-id: http://core.svn.wordpress.org/trunk@50875 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-30 00:21:58 +00:00
desrosj
8fa45ab8f8 Script Loader: Add file block assets to the svn-ignore list.
These are automatically generated and should not be committed.

Follow up to [51259].

Props gziolo, youknowriad.
See #53397.
Built from https://develop.svn.wordpress.org/trunk@51265


git-svn-id: http://core.svn.wordpress.org/trunk@50874 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 19:10:57 +00:00
ryelle
aea10c0c44 Help/About: WordPress 5.8 About Page.
This is the start of the WordPress 5.8 about page, introducing new content and a first pass of the new style.

Props chanthaboune, cbringmann, webcommsat, marybaum, melchoyce, shaunandrews, desrosj, ryelle, oglekler, yvettesonneveld, nalininonstopnewsuk, meher, femkreations, alanjacobmathew, courane01, annezazu, matveb, milana_cap, javiarce, ryokuhi, audrasjb.
See #52775.


Built from https://develop.svn.wordpress.org/trunk@51264


git-svn-id: http://core.svn.wordpress.org/trunk@50873 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 19:06:57 +00:00
Aaron Jorbin
ad14ee34eb Docs: Further Improve documentation for wp_should_load_separate_core_block_assets().
In [51256], the documentation was improved, this further improves it. As scripts are not yet a part of what this function does, they are not mentioned explicitly. Assets is used so that the docs don't need a lot of improvements when scripts do come into play..

Props desrosj, SergeyBiryukov, Jorbin.
See #53505.


Built from https://develop.svn.wordpress.org/trunk@51263


git-svn-id: http://core.svn.wordpress.org/trunk@50872 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 18:45:56 +00:00
desrosj
6fc65b33d5 Script Loader: Use the provided block version when registering styles.
This updates `register_block_style_handle()` to use the `version` value provided in the `$metadata` parameter for non-Core blocks (when present). This removes the requirement to use `filemtime()` to generate a unique version.

When `version` is not defined within `$metadata`, the script version will fallback to using the current version of WordPress.

The block version should be considered similar to the one specified by plugin developers within the header of the main plugin file.

Props hellofromTonya, gziolo, jorbin, desrosj, walbo, aristath.
Fixes #53507.
Built from https://develop.svn.wordpress.org/trunk@51262


git-svn-id: http://core.svn.wordpress.org/trunk@50871 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 18:24:56 +00:00
youknowriad
2f27f24191 Block Editor: Include the latest fixes targetted for 5.8 RC1.
It includes:

 - Add a label for screen reader in categories block gutenberg#33060
 - Remove "is-dark-theme" rules from mixins. gutenberg#33058
 - Adjust widget form margins in the new widget editor gutenberg#33040
 - [Block Library - Query Loop]: Select first Query Loop found from pattern selection gutenberg#32737

See #53397.

Built from https://develop.svn.wordpress.org/trunk@51261


git-svn-id: http://core.svn.wordpress.org/trunk@50870 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 15:53:43 +00:00
desrosj
d5cf36000b Docs: Correct @since annotation for WP_Block_Type->view_script.
Follow up to [51259].

Props swissspidy.
See #53397.
Built from https://develop.svn.wordpress.org/trunk@51260


git-svn-id: http://core.svn.wordpress.org/trunk@50869 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 15:47:58 +00:00
youknowriad
8e08c569c5 Build: Split packages and blocks to their webpack configs.
This also adds support for the viewScript for blocks fixing 
the PDF preview for file blocks.

Props desrosj, gziolo.
See #53397.

Built from https://develop.svn.wordpress.org/trunk@51259


git-svn-id: http://core.svn.wordpress.org/trunk@50868 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 15:09:58 +00:00
desrosj
fe87833764 Build/Test Tools: Add the artifacts directory to svn-ignore and .gitignore.
When E2E tests fail, test snapshots with more details about the failure are placed in this folder.

Props isabel_brison.
Fixes #53549.
Built from https://develop.svn.wordpress.org/trunk@51258


git-svn-id: http://core.svn.wordpress.org/trunk@50867 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 14:45:57 +00:00
Sergey Biryukov
c804143db6 Twenty Seventeen: Avoid JS errors when displaying legacy widgets.
Make sure the `$sidebar` variable is defined and has at least one entry in the array, before adding the `.below-entry-meta` class to elements below the entry meta.

Previously, the theme expected sidebar markup to exist on the page if sidebars are defined, but that markup is missing since only the widget itself and headers/footers of the page are loaded in the iframe used to display legacy widgets (widgets added prior to WordPress 5.8).

Props Clorith, Boniu91, desrosj.
Fixes #53512.
Built from https://develop.svn.wordpress.org/trunk@51257


git-svn-id: http://core.svn.wordpress.org/trunk@50866 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 12:57:56 +00:00
Sergey Biryukov
600d611e0d Docs: Improve documentation for wp_should_load_separate_core_block_assets().
This should clarify the purpose of the function and what effect it has on block styles loading.

Props aristath, desrosj, jorbin, SergeyBiryukov.
See #53505.
Built from https://develop.svn.wordpress.org/trunk@51256


git-svn-id: http://core.svn.wordpress.org/trunk@50865 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 11:12:02 +00:00
desrosj
186d7c75ea Coding Standards: Apply an alignment fix after composer format.
Follow up to [51254].

See #53375.
Built from https://develop.svn.wordpress.org/trunk@51255


git-svn-id: http://core.svn.wordpress.org/trunk@50864 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 00:39:58 +00:00
desrosj
516bc482bd Editor: Prevent block stylesheets from loading when they do not exist.
This fixes an issue where block stylesheets were being loaded even if they did not exist, causing 404 errors. The issue presented itself when the site was choosing to load block assets individually through the `should_load_separate_core_block_assets` filter hook.

This also fixes an issue where non-Core blocks would only be registered if they actually had asset files. This prevents developers from adding additional information to a style handle, such as inline styles through `wp_add_inline_style()`.

Props walbo, jorbin, aristath, desrosj, hellofromTonya.
Fixes #53375.
Built from https://develop.svn.wordpress.org/trunk@51254


git-svn-id: http://core.svn.wordpress.org/trunk@50863 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-29 00:08:57 +00:00
desrosj
fe2bd634e4 Twenty Twenty-One: Ensure Duotone images are displayed correctly in Dark Mode.
This reduces the specificity of the CSS selector applying a dimming effect to images so that the new Duotone feature is properly applied to images.

Props walbo.
Fixes #53531.
Built from https://develop.svn.wordpress.org/trunk@51253


git-svn-id: http://core.svn.wordpress.org/trunk@50862 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 23:40:59 +00:00
Clorith
87a427d3f0 Site Health: Improve readability of site titles.
This splits up the site title for the Site Health tabs to make it more obvious what page a user is viewing, and which tab under that page. It also removes a possible source of warnings if a user tries accessing a tab that does not exist.

The introduction of this check for existing tabs also improves the accuracy of the active-tab indicator, ensuring the indicator shows up for the default tab, when no other tab has been selected.

Follow-up to [50764].

Props audrasjb, swissspidy.
Fixes #53535.
Built from https://develop.svn.wordpress.org/trunk@51252


git-svn-id: http://core.svn.wordpress.org/trunk@50861 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 23:07:57 +00:00
desrosj
ccdb1766ae Themes: Remove mention of “FSE” in Core.
Props aristath, jorbin.
Fixes #53497.
Built from https://develop.svn.wordpress.org/trunk@51251


git-svn-id: http://core.svn.wordpress.org/trunk@50860 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 19:11:57 +00:00
youknowriad
687fcda03f Block Editor: Package updates including fixes from Gutenberg for WordPress 5.8 RC1.
This includes the fixes from https://github.com/WordPress/gutenberg/pull/33036

See #53397.

Built from https://develop.svn.wordpress.org/trunk@51250


git-svn-id: http://core.svn.wordpress.org/trunk@50859 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 16:01:36 +00:00
Sergey Biryukov
6311baa859 Docs: Update documentation for WP_Widget_Block per the documentation standards.
Remove unused `$post` global reference.

Follow-up to [50995], [51058], [51063], [51221].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51249


git-svn-id: http://core.svn.wordpress.org/trunk@50858 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 08:35:57 +00:00
noisysocks
7131a90b0a Widgets REST API: Fix non-multi widgets not appearing in wp_inactive_widgets
Registered widgets that do not extend WP_Widget should appear in the
wp_inactive_widgets sidebar by default. Having the widgets REST API call
retrieve_widgets() before serving any request ensures that this will happen.

This is a similar fix to [51235].

Fixes #53534.
Props zieladam, timothyblynjacobs.

Built from https://develop.svn.wordpress.org/trunk@51248


git-svn-id: http://core.svn.wordpress.org/trunk@50857 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 04:34:57 +00:00
Clorith
c26143ea2e Site Health: Add a unique wrapper for dashboard widget content.
This wraps the inner-content of the Site Health dashboard widget to give a unique target for CSS selectors, restoring the ability to collapse the widget.

The initial implementation targeted the `.inside` class used by all widgets to apply styling to the widget content, but this prevented the widget from being collapsed, as it added grid-styles which other widgets do not use, overriding the usual behavior when toggling widget visibility.

Follow-up to [50833].

Props alanjacobmathew, walbo.
Fixes #53521.
Built from https://develop.svn.wordpress.org/trunk@51247


git-svn-id: http://core.svn.wordpress.org/trunk@50856 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-27 15:56:58 +00:00
Sergey Biryukov
d18f86031a General: Ensure svn:eol-style is consistently set for all recently added files.
Follow-up to [49135], [49226], [49320], [49478], [49574], [51198].

Fixes #53528.
Built from https://develop.svn.wordpress.org/trunk@51246


git-svn-id: http://core.svn.wordpress.org/trunk@50855 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-27 12:46:01 +00:00
Sergey Biryukov
2797ef60da Block Editor: Remove empty blocks/query-loop directory.
The Query Loop block was renamed to Post Template.

Follow-up to [51101].

See #52991.
Built from https://develop.svn.wordpress.org/trunk@51245


git-svn-id: http://core.svn.wordpress.org/trunk@50854 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-27 11:29:00 +00:00
Sergey Biryukov
bf3ebaf60f Docs: Document api_version and variations properties in WP_Block_Type::__construct().
Add `@since` tags for all properties added in WordPress 5.5, 5.6, and 5.8.

Follow-up to [47875], [48117], [49224], [50297], [50419], [50527].

Props mbabker.
Fixes #53518.
Built from https://develop.svn.wordpress.org/trunk@51244


git-svn-id: http://core.svn.wordpress.org/trunk@50853 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-26 11:13:56 +00:00
Aaron Jorbin
792955066f Post WordPress 5.8 Beta 4 version bump.
Built from https://develop.svn.wordpress.org/trunk@51243


git-svn-id: http://core.svn.wordpress.org/trunk@50852 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 17:10:58 +00:00
Aaron Jorbin
084092a935 WordPress 5.8 Beta 4.
Built from https://develop.svn.wordpress.org/trunk@51242


git-svn-id: http://core.svn.wordpress.org/trunk@50851 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 16:49:57 +00:00
youknowriad
be0d5b2534 Block Editor: Update the packages with a number of fixes targeted for Beta 4.
It includes fixes from these two backport PRs: 

 - https://github.com/WordPress/gutenberg/pull/32992
 - https://github.com/WordPress/gutenberg/pull/32956

Props gziolo, ryelle, ntsekouras, desrosj, jorgefilipecosta.
See #53397

Built from https://develop.svn.wordpress.org/trunk@51241


git-svn-id: http://core.svn.wordpress.org/trunk@50850 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 15:52:22 +00:00
youknowriad
578cda50a2 Block Editor: Do not load a default font family for themes with theme.json.
This matches the behavior that has been in place in the gutenberg plugin.
The idea is that this makes the editor match the frontend by default for these themes.
If they use a custom font, they'll have to provide it for the editor as editor styles.

Props nosolosw.

Built from https://develop.svn.wordpress.org/trunk@51240


git-svn-id: http://core.svn.wordpress.org/trunk@50849 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 15:32:58 +00:00
desrosj
49a6a14915 REST API: Include the sidebar ID when saving a widget.
This ensures backwards compatibility for code expecting this field to be present.

Props strategio, noisysocks, spacedmonkey.
See #53452.
Built from https://develop.svn.wordpress.org/trunk@51239


git-svn-id: http://core.svn.wordpress.org/trunk@50848 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 15:25:59 +00:00
desrosj
5e2b659090 Widgets: Avoid a TypeError when adding a widget in the Customizer.
This fixes a bug where `action` is set to `null` when adding a widget in the Customizer.

Fixes #53488. See #53421, #53419.
Built from https://develop.svn.wordpress.org/trunk@51238


git-svn-id: http://core.svn.wordpress.org/trunk@50847 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 14:50:58 +00:00
desrosj
eeb8c63240 Docs: Various filter docblock improvements.
Follow up to [50776], [50956], [50983].

See #52920.
Built from https://develop.svn.wordpress.org/trunk@51237


git-svn-id: http://core.svn.wordpress.org/trunk@50846 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 14:40:57 +00:00
desrosj
fe473ccdee Twenty Twenty-One: Use the theme version when enqueueing theme assets.
This avoids having to interact with the filesystem and ensures browser and proxy caches are only cleared when the file is actually updated.

Props peterwilsoncc, ryelle, aristath, SergeyBiryukov.
Fixes #53502.
Built from https://develop.svn.wordpress.org/trunk@51236


git-svn-id: http://core.svn.wordpress.org/trunk@50845 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 13:37:57 +00:00
TimothyBlynJacobs
dc710243a3 REST API: Retrieve latest widgets before loading sidebars.
This fixes issues where sidebars would be unexpectedly missing from the new widgets screen. Running retrieve_widgets syncs sidebars that were registered after the last theme switch.

Props walbo, hellofromTonya, noisysocks.
Fixes #53489.

Built from https://develop.svn.wordpress.org/trunk@51235


git-svn-id: http://core.svn.wordpress.org/trunk@50844 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 13:18:58 +00:00
Sergey Biryukov
4b17d6b3e9 Tests: Correct PHPUnit version requirement in tests using ::createPartialMock().
The method was introduced in PHPUnit 5.5, not 6.0.

Follow-up to [48945], [48947] [51226].

See #52625.
Built from https://develop.svn.wordpress.org/trunk@51234


git-svn-id: http://core.svn.wordpress.org/trunk@50843 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 10:40:00 +00:00
ryelle
1a7033e75f Twenty Twenty-One: Add spacing around Query block when there is a background color.
Props scruffian, desrosj, poena.
See #53398.


Built from https://develop.svn.wordpress.org/trunk@51233


git-svn-id: http://core.svn.wordpress.org/trunk@50842 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 01:48:57 +00:00
desrosj
767be550d7 Widgets: Fix an “Invalid value” warning when adding a new widget in the Customizer.
This fixes a regression introduced in [50996] where sites that have been opted-out of the block-based widget editor experienced an “Invalid value.” error when adding a new widget to a sidebar in the Customizer.

This was caused by the early return value was changed to `null` from `$value` when set to an empty `array`, resulting in the widget being evaluated as invalid elsewhere.

Props jamesros161, caseymilne, naoki0h, ixkaito, zieladam, noisysocks, hellofromTonya.
Fixes #53479.
Built from https://develop.svn.wordpress.org/trunk@51232


git-svn-id: http://core.svn.wordpress.org/trunk@50841 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-25 00:08:58 +00:00