Fix settings icon not properly animating, minor refactor (#1313)

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## Description
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## Motivation and Context
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Fixes #870
## How Has This Been Tested?
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## Types of changes
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- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

Author: marcelwgn

WinUIGallery/SettingsPage.xaml

@@ -100,7 +100,7 @@
                     </toolkit:SettingsExpander.Items>
                 </toolkit:SettingsExpander>
 
-                <toolkit:SettingsExpander x:Name="ScreenshotCard" Header="Screenshot mode">
+                <toolkit:SettingsExpander x:Name="ScreenshotCard" Header="Screenshot mode" Visibility="Collapsed">
                     <toolkit:SettingsExpander.HeaderIcon>
                         <FontIcon Glyph="&#xEC4F;" />
                     </toolkit:SettingsExpander.HeaderIcon>

WinUIGallery/SettingsPage.xaml.cs

@@ -35,18 +35,12 @@ public string Version
         }
 
         public string WinAppSdkRuntimeDetails => App.WinAppSdkRuntimeDetails;
+        private int lastNavigationSelectionMode = 0;
 
         public SettingsPage()
         {
             this.InitializeComponent();
             Loaded += OnSettingsPageLoaded;
-
-            if (ElementSoundPlayer.State == ElementSoundPlayerState.On)
-                soundToggle.IsOn = true;
-            if (ElementSoundPlayer.SpatialAudioMode == ElementSpatialAudioMode.On)
-                spatialSoundBox.IsOn = true;
-
-            ScreenshotCard.Visibility = Visibility.Collapsed;
         }
 
         protected override void OnNavigatedTo(NavigationEventArgs e)
@@ -81,7 +75,16 @@ private void OnSettingsPageLoaded(object sender, RoutedEventArgs e)
                 {
                     navigationLocation.SelectedIndex = 1;
                 }
-            }
+                lastNavigationSelectionMode = navigationLocation.SelectedIndex;
+            }
+
+            if (ElementSoundPlayer.State == ElementSoundPlayerState.On)
+                soundToggle.IsOn = true;
+            if (ElementSoundPlayer.SpatialAudioMode == ElementSpatialAudioMode.On)
+                spatialSoundBox.IsOn = true;
+#if DEBUG
+            ScreenshotCard.Visibility = Visibility.Visible;
+#endif
         }
 
         private void themeMode_SelectionChanged(object sender, RoutedEventArgs e)
@@ -137,7 +140,13 @@ private void screenshotModeToggle_Toggled(object sender, RoutedEventArgs e)
 
         private void navigationLocation_SelectionChanged(object sender, SelectionChangedEventArgs e)
         {
-            NavigationOrientationHelper.IsLeftModeForElement(navigationLocation.SelectedIndex == 0, this);
+            // Since setting the left mode does not look at the old setting we 
+            // need to check if this is an actual update
+            if (navigationLocation.SelectedIndex != lastNavigationSelectionMode)
+            {
+                NavigationOrientationHelper.IsLeftModeForElement(navigationLocation.SelectedIndex == 0, this);
+                lastNavigationSelectionMode = navigationLocation.SelectedIndex;
+            }
         }
 
         private async void FolderButton_Click(object sender, RoutedEventArgs e)