Harden rounded clip timing and pixel alignment for all corners

MainWindow.xaml

@@ -358,6 +358,7 @@
                 CornerRadius="20"
                 BorderThickness="0"
                 Background="{DynamicResource backgroundColor}"
+                SnapsToDevicePixels="True"
                 ClipToBounds="True">
             <Grid>
                 <DockPanel Width="{Binding ActualWidth, ElementName=Window, Mode=OneWay}"