Bring back menu bar icon for Windows App Beta on Mac

This forum is focused on Azure Virtual Desktop Feedback. The Windows App feedback has transitioned to https://aka.ms/app_WindowsAppFeedback. If you are running into issues, we recommend to share your problem on our Tech Community forum (https://aka.ms/wvdtc) or open a support ticket after you have reviewed the troubleshooting options in our documentation (Windows Virtual Desktop troubleshooting overview - Azure | Microsoft Docs)