TokenSecuredChallenge - login prompt won't disappear (#1580)

Author: williambohrmann3

src/MAUI/Maui.Samples/Samples/Security/TokenSecuredChallenge/LoginPage.xaml.cs

@@ -51,7 +51,7 @@ private void LoginButtonClicked(object sender, EventArgs e)
 
         private void CancelButtonClicked(object sender, EventArgs e)
         {
-            // Fire the OnCanceled event to let the calling code no the login was canceled.
+            // Fire the OnCanceled event to let the calling code know the login was canceled.
             if (OnCanceled != null)
             {
                 OnCanceled(this, null);

src/MAUI/Maui.Samples/Samples/Security/TokenSecuredChallenge/TokenSecuredChallenge.xaml.cs

@@ -138,17 +138,17 @@ private async void LoginInfoEntered(object sender, LoginEventArgs e)
             finally
             {
                 // Dismiss the login controls.
-                if (Navigation.NavigationStack.OfType<LoginPage>().Any())
+                if (Shell.Current.Navigation.NavigationStack.OfType<LoginPage>().Any())
                 {
-                    await Navigation.PopAsync();
+                    _ = Shell.Current.Navigation.PopAsync();
                 }
             }
         }
 
         private void LoginCanceled(object sender, EventArgs e)
         {
             // Dismiss the login controls.
-            Navigation.PopAsync();
+            _ = Shell.Current.Navigation.PopAsync();
 
             // Cancel the task completion source task.
             _loginTaskCompletionSrc.TrySetCanceled();