Exclude anchor from search

[angrymouse]

When fetching anchor via graphql, there is chance you will get bundled transaction, which has anchor set to null until bundle is settled. It results to fail of fetching and "default" profile as result (until bundle is settled).

{
  "errors": [
    {
      "message": "Cannot return null for non-nullable field Transaction.anchor.",
      "locations": [
        {
          "line": 1,
          "column": 362
        }
      ],
      "path": [
        "transactions",
        "edges",
        0,
        "node",
        "anchor"
      ],
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR"
      }
    }
  ],
  "data": null
}
``` (response from gateway)