Allow overriding Flyout's popup IsLightDismissEnabled and OverlayDismissEventPassThrough properties

[BAndysc]

Is your feature request related to a problem? Please describe.

Using ContextFlyout is often advised over old ContextMenu, however their behaviour is different:

Avalonia/src/Avalonia.Controls/ContextMenu.cs

Lines 320 to 324 in 4007dfa

	_popup = new Popup
	{
	IsLightDismissEnabled = true,
	OverlayDismissEventPassThrough = true,
	};

Avalonia/src/Avalonia.Controls/Flyouts/PopupFlyoutBase.cs

Lines 362 to 368 in 4007dfa

	var popup = new Popup
	{
	WindowManagerAddShadowHint = false,
	IsLightDismissEnabled = true,
	//Note: This is required to prevent Button.Flyout from opening the flyout again after dismiss.
	OverlayDismissEventPassThrough = false
	};

ContextMenu sets OverlayDismissEventPassThrough to true, whereas MenuFlyout set it to false. Because of that MenuFlyout behaves a bit different than context menu - the user need to close the menu, before a new one can be opened, requiring two clicks vs one click in case of ContextMenu.

Describe the solution you'd like

Add StyledProperties IsLightDismissEnabled and OverlayDismissEventPassThrough to PopupFlyoutBase, use them when creating a popup and override their default values for MenuFlyout to match Context Menus behaviour.

Describe alternatives you've considered

No response

Additional context

No response

[maxkatz6]

There were some issues with this property explained in this PR #8448
Might need to be revisited.

[maxkatz6]

Fixed by #15517