Better relation adjudication labeling

[etgld]

I.e. in def adjudicate_correctness_grouped_relations... in adjudication.py potentially collapse

        yield labels_relation_to_json_relation(
            from_id=from_id,
            to_id=to_id,
            direction=label_relations[0]["direction"],
            labels=[annotator.name],
        )
        yield labels_relation_to_json_relation(
            from_id=from_id,
            to_id=to_id,
            direction=label_relations[0]["direction"],
            labels=label_relations[0]["labels"],
        )

to

        yield labels_relation_to_json_relation(
            from_id=from_id,
            to_id=to_id,
            direction=label_relations[0]["direction"],
            labels=[annotator.name, *label_relations[0]["labels"]],
        )