Backport pull request #12120 from jellyfin/release-10.9.z

Do not override <year> if <releasedate> is set

Original-merge: bf53f1ae38

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

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

MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs

@@ -519,7 +519,9 @@ namespace MediaBrowser.XbmcMetadata.Parsers
                     if (reader.TryReadDateTimeExact(nfoConfiguration.ReleaseDateFormat, out var releaseDate))
                     {
                         item.PremiereDate = releaseDate;
-                        item.ProductionYear = releaseDate.Year;
+
+                        // Production year can already be set by the year tag
+                        item.ProductionYear ??= releaseDate.Year;
                     }
 
                     break;