forgot to restore background

Author: ismaelestalayo

Microsoft.Toolkit.Uwp.UI.Controls.Core/InAppNotification/Styles/MSEdgeNotificationStyle.xaml

@@ -48,7 +48,7 @@
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="ButtonBase">
-                    <Grid x:Name="RootGrid" CornerRadius="2" Background="{ThemeResource ButtonPointerOverBackgroundThemeBrush}"
+                    <Grid x:Name="RootGrid" CornerRadius="2"
                           Margin="{TemplateBinding Margin}"
                           Height="{StaticResource SystemControlMSEdgeNotificationDismissButtonSize}"
                           Width="{StaticResource SystemControlMSEdgeNotificationDismissButtonSize}">