TinyMCE:
- Restore the "link" button state to disabled by default and enabled when text or image is selected.
- Remove the (recently added) default `link` plugin, not needed for `wpLink`.
See #27309
Built from https://develop.svn.wordpress.org/trunk@27447


git-svn-id: http://core.svn.wordpress.org/trunk@27293 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove the box-shadow from the separator in the right sidebar of the media modal.

Props avryl.
Fixes #27217. 


Built from https://develop.svn.wordpress.org/trunk@27448


git-svn-id: http://core.svn.wordpress.org/trunk@27294 1a063a9b-81f0-0310-95a4-ce76da25c4cd