the post-reboot steps ran successfully,
I then ran sudo qubes-dom0-update
it found grub2-efi-x64 2.06-7-fc41 to replace 2.06-4.fc37 and it updated successfully without errors now somehow
I also ran sudo qubes-dom0-update xfce4-screensaver then sudo dnf swap --allowerasing xscreensaver-base xfce4-screensaver to replicate the missing install step after pre-reboot failed on distro-sync for just grub2-efi-x64 (all the other packages succeeded, hence why I felt like I could maybe reboot and get away with it).
I also ran sudo authselect select local in the hope to solve pam_sss errors (minimal profile doesnt exist anymore in Fedora 41, seems local may be a replacement)
The new icons look sexy! Rebooting one last time hopefully everything is right! Thanks for update!