Add one more lock to appease CI

osu.Game/Database/RealmAccess.cs

@@ -879,10 +879,13 @@ namespace osu.Game.Database
                     isSendingNotificationResetEvents = true;
 
                     try
+                    {
+                        lock (notificationsResetMap)
                         {
                             foreach (var action in notificationsResetMap.Values)
                                 action();
                         }
+                    }
                     finally
                     {
                         isSendingNotificationResetEvents = false;