Legacy from early v2 implementation, we don't want to store relation ids
in the cache as the new implementation handle that with flat entities
properly already.
This causes some issues because when we return the updated view, it
contains an array of viewField objects with only the id in it so gql
complains because some fields are non-nullable in the output and the
resolver can't resolve viewField directly because viewField is in the
output (not complete though) already so it just ignores it.
