tests: Relax checks on journal writes regarding origin-visit*/snapshot
According to a recent irc discussion about the too many insertions scenario. The gist of it was, "unnecessary to check the multiple journal writes".
So this aligns the checks with other tests to ensure we find the expected objects in the journal in a less exhaustive way (that means no strict equality).
This diff is about aligning according the discussion and avoiding conflating !938 (closed)'s work with this.
Depends on !938 (closed)
Test Plan
tox
Migrated from D3346 (view on Phabricator)