Comment 37 for bug 1953052

So I can confirm that copying /usr/share/pipewire/media-session.conf to /etc/pipewire/media-session.d/media-session.conf and deleting these lines fixes the issue:
$ diff /etc/pipewire/media-session.d/media-session.conf /usr/share/pipewire/media-session.d/media-session.conf
94a95,116
> with-audio = [
> metadata
> default-nodes
> default-profile
> default-routes
> alsa-seq
> alsa-monitor
> ]
> with-alsa = [
> with-audio
> ]
> with-jack = [
> with-audio
> ]
> with-pulseaudio = [
> with-audio
> bluez5
> bluez5-autoswitch
> logind
> restore-stream
> streams-follow-default
> ]