Desktop: keep a vault-visibility failure from closing the app, and leave a crash log when anything else does

src/DodoSSH.Client.App/App.axaml.cs

@@ -48,6 +48,10 @@ internal sealed partial class DodoSshApp : Application
     {
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
+            // Recorded, not handled: see CrashLog for why the process still goes.
+            Avalonia.Threading.Dispatcher.UIThread.UnhandledException +=
+                (_, e) => CrashLog.RecordFromTheUiThread(e.Exception);
+
             ListenForOpenedLinks();
             ShowSomethingWhileComposing(desktop);
         }