Oh no, it absolutely isn’t. It’s actually a feature apple implemented to stop apps from scanning and interfacing with the devices on your local network without your approval and Teams has zero explanation on why it needs that permission nor why the calls can’t be made without it while every single other app is able to do so without that permission.
The only other apps that require it are device specific apps (printer, local smart home stuff, FTP, DLNA, etc) and network scanners.