Backport pull request #11806 from jellyfin/release-10.9.z

Return missing episodes for series when no user defined

Original-merge: ae584beaac

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

Backported-by: Joshua M. Boniface <joshua@boniface.me>

Emby.Server.Implementations/Session/SessionManager.cs

@@ -1202,7 +1202,8 @@ namespace Emby.Server.Implementations.Session
                             new DtoOptions(false)
                             {
                                 EnableImages = false
-                            })
+                            },
+                            user.DisplayMissingEpisodes)
                         .Where(i => !i.IsVirtualItem)
                         .SkipWhile(i => !i.Id.Equals(episode.Id))
                         .ToList();