New review comment by Animeshz on void-packages repository

https://github.com/void-linux/void-packages/pull/36416#discussion_r838453833

Comment:
Not sure what robust check here is, because this global wireplumber is intended to run as long as global pipewire service is running. Do we need something like `sv check pipewire > /dev/null && (make sure pipewire has really been started before we proceed)`?