Restrict context menu overlay to iOS only

The tap-blocking overlay is only needed on iOS to dismiss the context menu
on tap. Removed it from macOS and tvOS where it was either blocking normal
interactions or not functional due to platform limitations.

Shared/Views/VideoContextMenuView.swift

@@ -33,23 +33,21 @@ struct VideoContextMenuView: View {
 
     var body: some View {
         ZStack {
+            #if os(iOS)
             // Conditional overlay to block taps on underlying views
             if isOverlayVisible {
                 Color.clear
                     .contentShape(Rectangle())
-                #if !os(tvOS)
-                    // This is not available on tvOS < 16 so we leave out.
-                    // TODO: remove #if when setting the minimum deployment target to >= 16
                     .onTapGesture {
                         // Dismiss overlay without triggering other interactions
                         isOverlayVisible = false
                     }
-                #endif
                     .ignoresSafeArea() // Ensure overlay covers the entire screen
                     .accessibilityLabel("Dismiss context menu")
                     .accessibilityHint("Tap to close the context")
                     .accessibilityAddTraits(.isButton)
             }
+            #endif
 
             if video.videoID != Video.fixtureID {
                 contextMenu