Includes the following fixes:
- [Block Library]: Less warnings when blocks try to render themselves.
- Reset z-index on focused widget form
- Refactor appender margin.
- Fix slash inserter for widgets screen.
- Widget screens: set html block as freeform content handler.
- Widget Block: widget_id is undefined when a widget is placed.
- Add <CopyHandler> to WidgetAreasBlockEditorProvider
- Add width: 100% to components-base-control inside wp-block-legacy-widget
- [Widgets editor] Replace the "technical" error notice a more user-friendly one
- Fix legacy widget height overflow
- Fix "Select all" behavior in the editor
- Increase specificity of the NoPreview CSS rules to avoid conflicts with theme styles
- Fix move to widget area checkmark
- Replace legacy widget icon with its new version
- [Block Library - Query Loop]: Set default block variations not to inherit from global query
See #53397.
Built from https://develop.svn.wordpress.org/trunk@51344
git-svn-id: http://core.svn.wordpress.org/trunk@50953 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Moves the widgets block editor from Gutenberg into WordPress Core.
- Adds @wordpress/edit-widgets, @wordpress/customize-widgets and
@wordpress/widgets.
- Modifies wp-admin/widgets.php to branch between the old editor and new editor
depending on wp_use_widgets_block_editor().
- Modifies WP_Customize_Widgets to branch between the old editor control and new
editor control depending on wp_use_widgets_block_editor().
Fixes#51506.
Props isabel_brison, TimothyBlynJacobs, andraganescu, kevin940726, talldanwp.
Built from https://develop.svn.wordpress.org/trunk@50996
git-svn-id: http://core.svn.wordpress.org/trunk@50605 1a063a9b-81f0-0310-95a4-ce76da25c4cd
