images: Add hack for systemd-resolved startup race in rawhide

[martinpitt]

See https://bugzilla.redhat.com/show_bug.cgi?id=2333743

Fixes #7246

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• image-refresh fedora-rawhide

[cockpituous]

image-refresh fedora-rawhide done: https://github.com/cockpit-project/bots/commits/image-refresh-fedora-rawhide-20250111-042811

[cockpituous]

Success. Log: https://cockpit-logs.us-east-1.linodeobjects.com/image-refresh-fedora-rawhide-4ac707cd-20250111-041323/log.html

[martinpitt]

That rawhide failure isn't a regression here, it fails the same way in cockpit-project/cockpit#21504

[martinpitt]

@KKoukiou Does that size difference noise ring a bell? Seems to be fairly consistent, the numbers from three different runs (the latter is even from the current f-rawhide image, so it's not this image refresh) are all identical.