Hi! This is expected. We default enabled the permission instead of asking for it on-demand when you enable biometric unlock. This allows the extension to communicate with the desktop app, if you have it installed. While this introduces a on-time prompt for existing installations, for new installations there no longer is any permissions prompt needed. This is in preparation for shared unlock as @Nail1684 mentions but also affects biometric unlock in the extension.
The desire here is for things to “just work”, since the current biometric setup is quite complex and a frequent point of frustration for customers.