[3.x] Show media entity types in report

Done, please review!

An image of the new table is attached. Note, that we are not working on media entities through the entityTypeManager service. Instead, a database query is fired (Probably for performance reasons). The media bundle shouldn't need escaping, as it only represents the media type machine name.

This will be postponed, until we change how the media duplicate report page receives its media entities.

Discussed in this meta issue here: 🌱 [META][3.x] Use Custom media_duplicate Entity Type instead of records Active

Views and references on the media entity will allow to do so in 3.x