Update imgAreaSelect to 0.9.10. fixes #25370.
Built from https://develop.svn.wordpress.org/trunk@25545


git-svn-id: http://core.svn.wordpress.org/trunk@25465 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Trim leading whitespace from AJAX responses.

This fixes the warning "$(html) HTML strings must start with '<' character" by jQuery Migrate when adding nav menu items, post custom fields or comment replies.

fixes #23681.
Built from https://develop.svn.wordpress.org/trunk@25546


git-svn-id: http://core.svn.wordpress.org/trunk@25466 1a063a9b-81f0-0310-95a4-ce76da25c4cd