Tweaks for macOS (#1383)

* Fix constant Create Room button animation on macOS.

* Allow right-clicking on timeline items to work again on macOS.

* Use inline media upload previews on macOS

This comes with the caveat that the previews are no longer interactive.

ElementX/Sources/Screens/HomeScreen/View/HomeScreen.swift

@@ -126,8 +126,6 @@ struct HomeScreen: View {
         ToolbarItemGroup(placement: .bottomBar) {
             Spacer()
             newRoomButton
-                // Fix position animating on loop by getting caught up in the shimmer effect somehow.
-                .animation(.noAnimation, value: context.viewState.roomListMode)
         }
     }