Publishing error due to missing parent node language

We need to add testcase for the following situation:

Publish the node "Deutsch" using `POST /api/v1/nodes/:DeutschUuid/published?lang=de`
The node Deutsch has a parent Node English which only contains an english field container.

The assertPublishConsistency check is currently failing because the fallback check tries to assert that the node English also contains a german field container which is published.

Start with the POST /api/v1/nodes/:DeutschUuid/published?lang=de scenario and locate the test covering publishing consistency. Read the assertPublishConsistency check and reproduce a German child whose English parent has only an English field container. Done means the testcase captures the expected behavior without requiring a German container on the parent.

Written by the indexing model from the issue text.