wpView: improve handling of embed errors/error messages, see #28195
Built from https://develop.svn.wordpress.org/trunk@28754


git-svn-id: http://core.svn.wordpress.org/trunk@28568 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView: fix selecting all of view's "text" in Safari, props avryl, fixes #28088
Built from https://develop.svn.wordpress.org/trunk@28755


git-svn-id: http://core.svn.wordpress.org/trunk@28569 1a063a9b-81f0-0310-95a4-ce76da25c4cd