Skip loading unknown quests (e.g. for CN) shipped with the plugin

Questionable/Controller/QuestRegistry.cs

@@ -91,6 +91,8 @@ internal sealed class QuestRegistry
         _logger.LogInformation("Loading quests from assembly");
 
         foreach ((ElementId questId, QuestRoot questRoot) in AssemblyQuestLoader.GetQuests())
+        {
+            try
             {
                 var questInfo = _questData.GetQuestInfo(questId);
                 if (questInfo is LeveInfo leveInfo)
@@ -104,6 +106,11 @@ internal sealed class QuestRegistry
                 };
                 _quests[quest.Id] = quest;
             }
+            catch (Exception e)
+            {
+                _logger.LogWarning("Not loading unknown quest {QuestId} from assembly: {Message}", questId, e.Message);
+            }
+        }
 
         _logger.LogInformation("Loaded {Count} quests from assembly", _quests.Count);
     }