Pacify updater (#1899)

* Updater: Remove dirs selectively

* Log exceptions from updater async tasks

* Address riperiperi's comments

Ryujinx/Ui/MainWindow.cs

@@ -1131,7 +1131,10 @@ namespace Ryujinx.Ui
         {
             if (Updater.CanUpdate(true))
             {
-                _ = Updater.BeginParse(this, true);
+                Updater.BeginParse(this, true).ContinueWith(task =>
+                {
+                    Logger.Error?.Print(LogClass.Application, $"Updater Error: {task.Exception}");
+                }, TaskContinuationOptions.OnlyOnFaulted);
             }
         }