New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/36416#discussion_r838428919

Comment:
What does wireplumber do with a dbus user session? Using `dbus-run-session` makes a new, isolated bus that will be useless for external processes. Also, does a dbus user session require the existence of a system bus? You may need to `sv check dbus` to make sure the system bus is up. (I'm not sure about this.)