Fix regression from #1961 which broke the tests

Browse Source

Sometimes (for example in some test-repo-collections.sh test that broke) we
update from a remote with an older ostree-metadata branch, and the
check for downgrades broke in this case.

Its unclear exactly what it the best solution here, maybe to silently
disallow the update. However, this change instead just re-allows the
downgrade for this particular case so we get the old behaviour.

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f