I did this, but the problem was that I never got any notifications. I did not block notifications at all, but I got little to no notifications especially for when meetings started. I had to revert to full app because of this.
Messing around the edge://flags to toggle native notification on or off, I remembered that the default notification mode has bug currently. Also ensure you grant it permission of notification in system setting. That isn't done by default.
Thank you! I checked windows system notifications & it looks like edge notifications were already enabled but I did need to turn on the teams.microsoft.com notifications in edge.