Media Modal: don't show the "Edit Image" button for attachments that don't have `data.sizes` set.

Fixes #28038.

Built from https://develop.svn.wordpress.org/trunk@29529


git-svn-id: http://core.svn.wordpress.org/trunk@29305 1a063a9b-81f0-0310-95a4-ce76da25c4cd