Jellyfin hid movies inside collections

A repair for Jellyfin: movies inside a collection are read one by one again.

Fixed

• Jellyfin hid movies inside collections. With "Group movies into collections" switched on in Jellyfin, Jellyfin answered Nexview with the collection instead of the movies in it. Nexview stored "Alien Collection" as a movie and missed every movie inside, so Jellyfin seemed to have far fewer movies than Emby or Plex with the same library, and Compare servers listed them as missing. Nexview now asks for every movie on its own, and a collection is never stored as a movie. Run Sync now once for Jellyfin to read the library again. Emby was not affected, it only groups when asked to.