TinyMCE in iOS:
- Fix placing the caret at the bottom of longer posts when the keyboard is open.
- Disable resizing on switching editors and on show/hide the kitchen sink row.
See #28242
Built from https://develop.svn.wordpress.org/trunk@28626


git-svn-id: http://core.svn.wordpress.org/trunk@28446 1a063a9b-81f0-0310-95a4-ce76da25c4cd