Fix: Block fields in object bricks are always output as null even though they are filled

[blankse]

Field config:

  -
      attributes:
          attribute: '?{"containerKey":"BrickName","fieldname":"fieldName","brickfield":"blockField"}~blockField'
          label: Test
          dataType: block
      isOperator: false

GraphQL Query:

{
  getTestClass(id: 123) {
    testDE: test(language: "de") {
      medium
    }
    testEN: test(language: "en") {
      medium
    }
  }
}

Output before:

{
  "data": {
    "getTestClass": {
      "testDE": null,
      "testEN": null
    }
  }
}

Output after first commit:

{
  "data": {
    "getTestClass": {
      "testDE": [
        {
          "medium": "Luft"
        }
      ],
      "testEN": [
        {
          "medium": "Luft"
        }
      ]
    }
  }
}

Output after last commit:

{
  "data": {
    "getTestClass": {
      "testDE": [
        {
          "medium": "Luft"
        }
      ],
      "testEN": [
        {
          "medium": "Air"
        }
      ]
    }
  }
}

[mcop1]

Thank you!