Improved unit-test coverage of "Queues with cleanup heartbeat above zero are not being picked for cleanup"
requested to merge 322-queues-with-cleanup-heartbeat-above-zero-are-not-being-picked-for-cleanup-2 into main
Summary
This commit improves the unit-test coverage of the queue cleanup issues fixed in !197 (merged).
Requires manual tests in pre-production
References
Closes #322 (closed)