Remove DialogOverlayPopupHost ContentPresenter background which should be handled via Border PART_ContentBackground. Fix #69

Author: SKProCH

DialogHost.Avalonia/DialogHost.axaml

@@ -66,7 +66,6 @@
                 ClipToBounds="{Binding Path=(dialogHostAvalonia:DialogHostStyle.ClipToBounds), RelativeSource={RelativeSource FindAncestor, AncestorType=dialogHostAvalonia:DialogHost}}"
                 Background="{Binding Path=Background, RelativeSource={RelativeSource FindAncestor, AncestorType=dialogHostAvalonia:DialogHost}}">
           <ContentPresenter Name="PART_ContentPresenter"
-                            Background="{TemplateBinding Background}"
                             ContentTemplate="{TemplateBinding ContentTemplate}"
                             Content="{TemplateBinding Content}"
                             Padding="{TemplateBinding Padding}" />