Created Issue: [AvalonDock 2.0] LayoutAutoHideWindowControl always uses generic.xaml theme [15776]

The LayoutAutoHideWindowControl always uses generic.xaml theme.

For example, if I changed the style for the LayoutAnchorableControl in generic.xaml, it will apply to all LayoutAnchorableControl in an LayoutAutoHideWindowControl , regardless of the active theme.