ComboBox pointerover set BorderBrush not work

[Timskt]

Describe the bug

ComboBox pointerover set BorderBrush not work.

To Reproduce

test code:

<UserControl xmlns="https://github.com/avaloniaui"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <UserControl.Styles>
       <Style Selector="ComboBox">
            <Setter Property="BorderBrush" Value="#cccccc" />
            <Setter Property="BorderThickness" Value="1" />
            <Style Selector="^:pointerover">
                <Setter Property="BorderBrush" Value="#eb5a10" />
                <Setter Property="BorderThickness" Value="1" />
            </Style>
        
        </Style>
        
      </UserControl.Styles>
   <ComboBox Width="200" SelectedIndex="1" >
            <ComboBoxItem Content="1"></ComboBoxItem>
            <ComboBoxItem Content="2"></ComboBoxItem>
            <ComboBoxItem Content="3"></ComboBoxItem>
        </ComboBox>
</UserControl>

Expected behavior

No response

Avalonia version

11.3.2

OS

Windows

Additional context

No response

[maxkatz6]

It would be this:

Avalonia/src/Avalonia.Themes.Fluent/Controls/ComboBox.xaml

Lines 188 to 192 in 884051e

	<!-- PointerOver State -->
	<Style Selector="^:pointerover /template/ Border#Background">
	<Setter Property="Background" Value="{DynamicResource ComboBoxBackgroundPointerOver}" />
	<Setter Property="BorderBrush" Value="{DynamicResource ComboBoxBorderBrushPointerOver}" />
	</Style>

See https://docs.avaloniaui.net/docs/guides/styles-and-resources/troubleshooting#selector-with-a-pseudoclass-doesnt-override-the-default for details on why

[Timskt]

thank you very much！😃