Assuming that your hypothesis is correct: No. Signal doesn't have that permission and I think whatsapp doesn't either, and neither signal nor whatsapp can be signed out in the first place.
I wouldn't go so far as calling my post a hypothesis, it was like a guess. Another guess, wouldn't the fact that neither WhatsApp nor Signal are causing the same issues hint at MS Teams being the culprint?
Teams does the wrong thing, there's no question about that. But it's not clear to me that the Android core is unable to check that the phone app does the job, and has to trust it blindly.
