Fire the update_blog_public action from update_blog_status() instead of update_blog_public(). Pass blog ID and value to the action.

Add code to noindex() to sync the 'public' value in the site options table with the blog_public value in the options table.

fixes #23155


git-svn-id: http://core.svn.wordpress.org/trunk@23794 1a063a9b-81f0-0310-95a4-ce76da25c4cd