remote-state: For local repos, set collection id for main ref table too

If you're listing a file: uri we (as before) add the collection-ref
tables, but we now also set the proper collection-id for the main ref
table if the ostree.summary.collection-id key is set.
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f