Update only the async content-ingestion routing (ingestion_task_queue and ingestion_workflow_name) for an article type. No other article type field can be changed through this operation.

This is a shared-catalog admin operation, like create and delete, and requires the elevated locations-directory:support scope rather than the regular locations-directory:write scope.

ingestion_task_queue and ingestion_workflow_name must either both be provided, or both be omitted/null together to clear ingestion routing for this type.