worth knowing that Firefox is now available natively as rpm package on stream 10 , so a dnf install firefox would work directly. Is there a different reason why you’d want a flatpack version ?
I am working on provisioning some c10s systems. I missed that firefox was added so thank you for letting me know. Still I would like to know how to use the flatpak mechanism though not necessarily on production machines.
dnf list *firefox* *thunderbird*
Available Packages
firefox.x86_64 128.6.0-1.el10 appstream
redhat-flatpak-preinstall-firefox.noarch 0.1-4.el10 appstream
redhat-flatpak-preinstall-thunderbird.noarch 0.1-4.el10 appstream