Mozilla/5.0 (X11; Linux aarch64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1
I had set some orca preferences for the lightdm user when I had a locale
set, so I cleaned its home up completely before trying both without and
then with the patch. I can confirm that the patch works, applied to the
latest orca master, pulled just minutes ago. Lightdm now speaks with
only the reader settings configured in my
/etc/lightdm/lightdm-gtk-greeter.conf file. I do hope this makes it into
40.0. Thanks all for getting this working.