Media Grid: Use the proper attachment value for `uploadedToTitle`.

See #24716.

Built from https://develop.svn.wordpress.org/trunk@28997


git-svn-id: http://core.svn.wordpress.org/trunk@28785 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: JSHint fixes.

See #24716. 

Built from https://develop.svn.wordpress.org/trunk@28998


git-svn-id: http://core.svn.wordpress.org/trunk@28786 1a063a9b-81f0-0310-95a4-ce76da25c4cd