Skip processing application for LDN if it does not have control holder (#460) [ci-skip]

src/Ryujinx/UI/Windows/MainWindow.axaml.cs

@@ -170,7 +170,7 @@ namespace Ryujinx.Ava.UI.Windows
             {
                 var ldnGameDataArray = e.LdnData.ToList();
                 ViewModel.LdnData.Clear();
-                foreach (var application in ViewModel.Applications)
+                foreach (var application in ViewModel.Applications.Where(it => it.HasControlHolder))
                 {
                     ref var controlHolder = ref application.ControlHolder.Value;