Amend how we hide via deactivation as the user may still want to call Hide explicitly while having IsLightDismissedEnabled set to false

samples/NotificationFlyoutSample/SampleFlyout.xaml

@@ -2,7 +2,8 @@
     x:Class="NotificationFlyoutSample.SampleFlyout"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:controls="using:TheXamlGuy.NotificationFlyout.Uwp.UI.Controls">
+    xmlns:controls="using:TheXamlGuy.NotificationFlyout.Uwp.UI.Controls"
+    IsLightDismissEnabled="False">
     <controls:NotificationFlyout.ContextFlyout>
         <MenuFlyout>
             <MenuFlyoutItem Click="OnCloseMenuFlyoutItemClick" Text="Close" />

src/TheXamlGuy.NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyout.cs

@@ -69,9 +69,14 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
                 PreparePopup();
             }
 
+            _popup.IsOpen = false;
+        }
+
+        internal void TryHide()
+        {
             if (IsLightDismissEnabled)
             {
-                _popup.IsOpen = false;
+                Hide();
             }
         }
 

src/TheXamlGuy.NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyoutApplication.cs

@@ -126,7 +126,7 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
         private void OnNotificationFlyoutXamlHostDeactivated(object sender, EventArgs args)
         {
             if (Flyout == null) return;
-            Flyout.Hide();
+            Flyout.TryHide();
         }
 
         private void ShowFlyout()