Fix Horizonal/VerticalContentAlignment is not affect ContentPresenter arrange

src/Avalonia.Controls/Presenters/ContentPresenter.cs

@@ -95,6 +95,7 @@ namespace Avalonia.Controls.Presenters
         static ContentPresenter()
         {
             AffectsRender<ContentPresenter>(BackgroundProperty, BorderBrushProperty, BorderThicknessProperty, CornerRadiusProperty);
+            AffectsArrange<ContentPresenter>(HorizontalContentAlignmentProperty, VerticalContentAlignmentProperty);
             AffectsMeasure<ContentPresenter>(BorderThicknessProperty, PaddingProperty);
             ContentProperty.Changed.AddClassHandler<ContentPresenter>((x, e) => x.ContentChanged(e));
             ContentTemplateProperty.Changed.AddClassHandler<ContentPresenter>((x, e) => x.ContentChanged(e));