Editor scrolling:
- Improve TinyMCE resizing when a floated block is at the end of the content.
- Improve setting the padding/margin under the toolbar on loading.
- Add custom event on TinyMCE resizing and use it to adjust the pinning (if needed).
Part props avryl, see #28328.
Built from https://develop.svn.wordpress.org/trunk@29279


git-svn-id: http://core.svn.wordpress.org/trunk@29061 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: Remove fields from showing in the grid itself.

All details are still available within the modal, and less-distinguishable non-image files still show the filename along with the file type icon.

Reverts [29079], [29078], [29077], and [28995]. see #24716.

Built from https://develop.svn.wordpress.org/trunk@29280


git-svn-id: http://core.svn.wordpress.org/trunk@29062 1a063a9b-81f0-0310-95a4-ce76da25c4cd