stacked topics: MR test with rebase and publication
This is based on the scenario of heptapod#43 (closed), with further complication that we publish a topic in the same push.
This instance will be upgraded to Heptapod 17.9.0rc1 on 2025-03-27 between 17:00 and 18:00 UTC+2
This is based on the scenario of heptapod#43 (closed), with further complication that we publish a topic in the same push.