* refactor: Replace IsPopup with Enable*Layer properties on VisualLayerManager
- Remove IsPopup from VisualLayerManager, add granular Enable*Layer properties:
EnableAdornerLayer (default true), EnableOverlayLayer (default false),
EnablePopupOverlayLayer (internal, default false), EnableTextSelectorLayer (default false)
- Add PART_VisualLayerManager template part to TopLevel with protected property
- Window and EmbeddableControlRoot override OnApplyTemplate to enable
overlay, popup overlay, and text selector layers
- OverlayLayer is now wrapped in a Panel with a dedicated AdornerLayer sibling
- AdornerLayer.GetAdornerLayer checks for OverlayLayer's dedicated AdornerLayer
- Update all 8 XAML templates (both themes) to name PART_VisualLayerManager
and remove IsPopup="True" from PopupRoot/OverlayPopupHost
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Add XML doc to VisualLayerManager
* Also search for AdornerLayer from TopLevel
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Julien Lebosquain <julien@lebosquain.net>
Nikita Tsukanov