refact: macos, hide&show on leaving view (#8712)

Signed-off-by: fufesou <linlong1266@gmail.com>

flutter/lib/desktop/pages/remote_page.dart

@@ -416,6 +416,10 @@ class _RemotePageState extends State<RemotePage>
   }
 
   void leaveView(PointerExitEvent evt) {
+    if (isMacOS) {
+      DesktopMultiWindow.hideShow();
+    }
+
     if (_ffi.ffiModel.keyboard) {
       _ffi.inputModel.tryMoveEdgeOnExit(evt.position);
     }