Remove ExtraIds column and use OwnerId relationship for extras

- Remove ExtraIds property from BaseItemEntity and BaseItem
- Update RefreshExtras to query via OwnerId instead of cached ExtraIds
- Update GetExtras methods to query database via OwnerIds filter
- Add OwnerIds and ExtraTypes filter support to InternalItemsQuery
- Add filter handling in BaseItemRepository for new query options
- Update HasSpecialFeature/HasTrailer filters to use Extras relationship
- Add CleanupOrphanedExtras migration routine
- Add database migration to drop ExtraIds column

src/Jellyfin.Database/Jellyfin.Database.Implementations/Entities/BaseItemEntity.cs

@@ -118,8 +118,6 @@ public class BaseItemEntity
 
     public string? ProductionLocations { get; set; }
 
-    public string? ExtraIds { get; set; }
-
     public int? TotalBitrate { get; set; }
 
     public BaseItemExtraType? ExtraType { get; set; }