Fix merging documents with @list elements.
This happens when we find two metadata files each with at least two authors.
Resolves Sentry SWH-INDEXER-2
Migrated from D2765 (view on Phabricator)
This happens when we find two metadata files each with at least two authors.
Resolves Sentry SWH-INDEXER-2
Migrated from D2765 (view on Phabricator)