After reinstalling openSUSE to get my other issue for spectacle fixed (and I don’t know why that fixed the issue) it updated all those packages already, but I added the lock anyway and it looks like it won’t install it:
The following 11 items are locked and will not be changed by any action:
Available:
discover6-backend-flatpak flatpak flatpak-builder flatpak-devel flatpak-kcm6 flatpak-kcm6-lang
flatpak-remote-flathub flatpak-selinux flatpak-spawn flatpak-xdg-utils flatpak-zsh-completion
Hopefully it won’t break the next time an update occurs. Doubtful.