If the ingest comes in with zero supported language, do not make any changes, specifically removals.

JSMR.Infrastructure/Ingestion/VoiceWorkUpdater.cs

@@ -426,6 +426,9 @@ public class VoiceWorkUpdater(AppDbContext dbContext, ITimeProvider timeProvider
         VoiceWork voiceWork = upsertContext.VoiceWorks[ingest.ProductId];
         Dictionary<string, VoiceWorkSupportedLanguage> existingLanguageLinks = voiceWork.SupportedLanguages.ToDictionary(x => x.Language);
 
+        if (ingest.SupportedLanguages.Count == 0)
+            return;
+
         foreach (SupportedLanguage supportedLanguage in ingest.SupportedLanguages)
         {
             if (!existingLanguageLinks.TryGetValue(supportedLanguage.Code, out VoiceWorkSupportedLanguage? voiceWorkSupportedLanguage))