Add post filtering for theme song and video

MediaBrowser.Controller/Entities/Folder.cs

@@ -848,6 +848,18 @@ namespace MediaBrowser.Controller.Entities
                 return true;
             }
 
+            if (query.HasThemeSong.HasValue)
+            {
+                Logger.LogDebug("Query requires post-filtering due to HasThemeSong");
+                return true;
+            }
+
+            if (query.HasThemeVideo.HasValue)
+            {
+                Logger.LogDebug("Query requires post-filtering due to HasThemeVideo");
+                return true;
+            }
+
             // Filter by VideoType
             if (query.VideoTypes.Length > 0)
             {