FIX: 'Runtime Object type "AggregateInversionSolution" is not a possible type for "PredecessorUnion"

[chrisbc]

with the following query (PROD)...

query file0 ($id: ID!) {
    node(id: $id) {
      __typename
      ... on PredecessorsInterface {
        predecessors {
          id
          typename
          relationship
          depth
          file_node: node {
            __typename
            ... on Node {id}
            ... on File {
              file_name
            }
          }
        }
      }
    }
  }

{'id': 'U2NhbGVkSW52ZXJzaW9uU29sdXRpb246MTE0MjAw'}