Fixed: Monitored status being reset after refresh when artist is edited manually

(cherry picked from commit 98b1a7681be36199283f36c692ed10ff30ded721)

src/NzbDrone.Core/Music/Services/ArtistService.cs

@@ -224,9 +224,13 @@ namespace NzbDrone.Core.Music
         public Artist UpdateArtist(Artist artist, bool publishUpdatedEvent = true)
         {
             _cache.Clear();
+
             var storedArtist = GetArtist(artist.Id);
-            var updatedArtist = _artistRepository.Update(artist);
 
+            // Never update AddOptions when updating an artist, keep it the same as the existing stored artist.
+            artist.AddOptions = storedArtist.AddOptions;
+
+            var updatedArtist = _artistRepository.Update(artist);
             if (publishUpdatedEvent)
             {
                 _eventAggregator.PublishEvent(new ArtistEditedEvent(updatedArtist, storedArtist));