Taxonomy metaboxes that are disabled for the current user are included in the
post.php markup, but do not contain the 'newtag' field, and so should be
skipped when looping through the metaboxes to avoid invoking String methods
on a variable of type `undefined`.
Props MikeNGarrett, A5hleyRich.
Fixes#30859.
Built from https://develop.svn.wordpress.org/trunk@31895
git-svn-id: http://core.svn.wordpress.org/trunk@31874 1a063a9b-81f0-0310-95a4-ce76da25c4cd
- Add missing form labels.
- Add some screen-reader-text and aria-hidden attributes.
- Focus handling improvements.
- Change tagcloud-link into a button.
- Add missing ID attribute in tools.php.
Props afercia. Fixes#31449.
Built from https://develop.svn.wordpress.org/trunk@31566
git-svn-id: http://core.svn.wordpress.org/trunk@31547 1a063a9b-81f0-0310-95a4-ce76da25c4cd
