(#23074) Do not expect rebuild during cert signing

The removal of rebuilding the inventory during certificate signing to
remove a race condition caused an acceptance test to break. The break is
not about an intrinsic part of the test and so the assertion has simply
been removed.
Merge pull request #2041 from zaphod42/issue/master/23074-no-longer-rebuild-during-signing

(#23074) Do not expect rebuild during cert signing