Double-click on XAML TitleBar icon doesn't close the window

[whiskhub]

Describe the bug

According to Windows app design guidelines, the icon in the app title bar should have the following behavior:

A single-click/tap on the icon should show system window menu.
A double-click/tap should close the window.

The icon in the new TitleBar element does not follow this guideline, i.e. the window does not close when double clicking on the icon, nor shows the system window menu on single click.

Steps to reproduce the bug

1. Add a TitleBar element with an icon (IconSource) to the app
2. Build and run the app
3. Double-click on the icon in the title bar

Expected behavior

A single-click/tap on the icon should show system window menu.
A double-click/tap should close the window.

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.6 Experimental 2: 1.6.240701003-experimental2

Windows version

Windows 11 (22H2): Build 22621

Additional context

No response