Use `$_sys_service_mgr` to handle `--user`, so that `systemctl --user stop` will correctly filter the active (user) units. Before this patch, only user units that also exist as system units and are stoppable there would be listed.
Use `$_sys_service_mgr` to handle `--user`, so that `systemctl --user stop` will correctly filter the active (user) units. Before this patch, only user units that also exist as system units and are stoppable there would be listed.