Add yet another help_quit_kde needle
    
    I do not know what's going on with this quit button and why it
    seems to keep showing up looking different. Today it looks
    different in the same image (KDE live) from the same compose
    (today's Rawhide) on prod and stg openQA. I've no idea how that
    is possible, but oh well, let's keep adding needles till the
    pain stops.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>