Don't make `mce-view` a dependency for `media-audiovideo`. Make `media-audiovideo` and `wp-playlist` dependencies for `mce-view` and only enqueue `mce-view` in the admin in `wp_enqueue_media()`. MCE views don't need to be included when media is loaded on the front end.

Fixes #27509.


Built from https://develop.svn.wordpress.org/trunk@27733


git-svn-id: http://core.svn.wordpress.org/trunk@27570 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Always localize `mediaelement` when passing settings to the page via JSON. `wp-mediaelement` only gets triggered for audio and video shortcodes, playlists need the path passed to the page as well, as they don't enqueue `wp-mediaelement`.

See #27509.


Built from https://develop.svn.wordpress.org/trunk@27734


git-svn-id: http://core.svn.wordpress.org/trunk@27571 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Pass the default mime-type icon as the image for a track when a featured image is not selected for an item in a playlist. Image display in general can be toggled on/off in the modal via Playlist Settings.

Fixes #27525.


Built from https://develop.svn.wordpress.org/trunk@27735


git-svn-id: http://core.svn.wordpress.org/trunk@27572 1a063a9b-81f0-0310-95a4-ce76da25c4cd