Handle anaconda giving users admin by default in Rawhide
    
    As of today's Rawhide compose, user accounts added in Rawhide
    have admin privs by default. For now we need to handle both
    possibilities here (click the box if it's not clicked already);
    after F35 EOL we can just drop all handling of that box.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>