Media Modal: Restore to the previous filter and search error message.

fixes #28963.
Built from https://develop.svn.wordpress.org/trunk@29532


git-svn-id: http://core.svn.wordpress.org/trunk@29308 1a063a9b-81f0-0310-95a4-ce76da25c4cd
DFW: revert applying the Visual editor body color and background-color for now. Set the color to #333 and the background to transparent. Fixes #28330.
Built from https://develop.svn.wordpress.org/trunk@29533


git-svn-id: http://core.svn.wordpress.org/trunk@29309 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin details: Accessibility improvements

* Focus the close link to transfer focus into the plugin modal.
* Set title attribute on iframe for screereaders.

props jwenerd for initial patch and a11y team for testing.
fixes #28823.
Built from https://develop.svn.wordpress.org/trunk@29534


git-svn-id: http://core.svn.wordpress.org/trunk@29310 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView: ignore more keys when the caret is around a view. Part props avryl, fixes #29115.
Built from https://develop.svn.wordpress.org/trunk@29535


git-svn-id: http://core.svn.wordpress.org/trunk@29311 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView: remove CSS transition for the fake caret. Can have very annoying side effect: the whole page shifts a bit. See #28595.
Built from https://develop.svn.wordpress.org/trunk@29536


git-svn-id: http://core.svn.wordpress.org/trunk@29312 1a063a9b-81f0-0310-95a4-ce76da25c4cd