hello,
the inird used to have script to override language of livecd through
live_locale=
after moving to dracut
this feature no longer exists
I found /usr/share/dracut/modules.d/10redhat-i18n/parse-i18n.sh
but I'm not sure it's what I'm looking for
as we used to pass live_locale to override language at boot prompt
https://bugzilla.redhat.com/show_bug.cgi?id=454105