_GroupActivities_SwiftUI cross-import overlay

A cross-import overlay that bridges GroupActivities (SharePlay) and SwiftUI on visionOS, defining no types of its own. It adds SwiftUI presentation and immersive-space support for GroupActivities, so you can drive SharePlay experiences from your SwiftUI views and immersive spaces.

This module re-exports or extends other frameworks; it declares no public types of its own in the synthesized interface.