ci: show failed unit details when boot smoke test is degraded

[jeckersb]

Assisted-by: OpenCode (claude-opus-4-6)
Signed-off-by: John Eckersberg jeckersb@redhat.com

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[jeckersb]

Hm well on main this doesn't exercise the degraded path so let me add #172 on top of this

[jeckersb]

ok that's much more useful

May 13 20:18:20 fedora systemd[1]: Starting bootloader-update.service - Update bootloader on boot...
May 13 20:18:22 fedora bootupctl[812]: error: Finding block device from boot or sysroot: Failed to find block device from /boot or /sysroot
May 13 20:18:22 fedora systemd[1]: bootloader-update.service: Main process exited, code=exited, status=1/FAILURE

[jeckersb]

Let me remove the cherry-pick of #172 and then I think we can merge this overtop of the failures, then we can fix the actual problem over in #172