Backport pull request #15594 from jellyfin/release-10.11.z

Fix isMovie filter logic

Original-merge: 94f3725208

Merged-by: crobibero <cody@robibe.ro>

Backported-by: Bond_009 <bond.009@outlook.com>

MediaBrowser.Controller/Entities/Folder.cs

@@ -1409,7 +1409,7 @@ namespace MediaBrowser.Controller.Entities
             if (this is BoxSet && (query.OrderBy is null || query.OrderBy.Count == 0))
             {
                 realChildren = realChildren
-                    .OrderBy(e => e.ProductionYear ?? int.MaxValue)
+                    .OrderBy(e => e.PremiereDate ?? DateTime.MaxValue)
                     .ToArray();
             }