Ubuntu's pipewire-pulse in snap grants microphone access even when the snap interface for audio-record is not set.
https://gitlab.freedesktop.org/pipewire/wireplumber/-/merge_requests/567
https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/1779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4964
https://bugs.launchpad.net/ubuntu/+source/pipewire/+bug/1995707/