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/RoomScreen/View/Style/TimelineItemBubbledStylerView.swift

@@ -139,6 +139,12 @@ struct TimelineItemBubbledStylerView<Content: View>: View {
             } action: {
                 context.send(viewAction: .timelineItemMenuAction(itemID: timelineItem.id, action: .reply))
             }
+            .contextMenu {
+                TimelineItemMacContextMenu(item: timelineItem,
+                                           actionProvider: context.viewState.timelineItemMenuActionProvider) { action in
+                    context.send(viewAction: .timelineItemMenuAction(itemID: timelineItem.id, action: action))
+                }
+            }
             .padding(.top, messageBubbleTopPadding)
     }
 

ElementX/Sources/Screens/RoomScreen/View/Style/TimelineItemPlainStylerView.swift

@@ -81,6 +81,12 @@ struct TimelineItemPlainStylerView<Content: View>: View {
         } action: {
             context.send(viewAction: .timelineItemMenuAction(itemID: timelineItem.id, action: .reply))
         }
+        .contextMenu {
+            TimelineItemMacContextMenu(item: timelineItem,
+                                       actionProvider: context.viewState.timelineItemMenuActionProvider) { action in
+                context.send(viewAction: .timelineItemMenuAction(itemID: timelineItem.id, action: action))
+            }
+        }
     }
     
     @ViewBuilder