Change default VerticalAlignment in ComboBox

Author: l1pton17

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.ComboBox.xaml

@@ -675,7 +675,7 @@
         <Setter Property="VerticalContentAlignment" Value="Top" />
         <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
         <Setter Property="HorizontalAlignment" Value="Stretch"/>
-        <Setter Property="VerticalAlignment" Value="Top"/>
+        <Setter Property="VerticalAlignment" Value="Center"/>
         <Setter Property="ScrollViewer.CanContentScroll" Value="true" />
         <Setter Property="ScrollViewer.PanningMode" Value="Both" />
         <Setter Property="Stylus.IsFlicksEnabled" Value="False" />