rootbld cannot create groups from pkggroups=

with a pkggroups=pipewire

>>> pipewire: Unpacking /var/cache/distfiles/pipewire-0.3.66.tar.gz...
>>> pipewire: Creating group pipewire
abuild-addgroup: User demon is not a member of group abuild

>>> ERROR: pipewire: mkusers failed
>>> ERROR: pipewire: rootbld failed

the actual (host) user is in abuild