@rmondello That's not just a passkey problem. Every time my mother calls me to ask about "that strange question" which just popped up on her phone or computer, I first ask which app is showing this. Generally, she has no idea about this, though. And that is true even for dialogs where it's obvious to me, but there are some where even I am stumped.
I think every OS needs a generic solution that makes it absolutely obvious what app promoted a specific question/decision to the user.