IncludesNullRight should return false

[alexzautke]

    {
      "testsName": "CqlListOperatorsTest",
      "groupName": "Includes",
      "testName": "IncludesNullRight",
      "expression": "{'s', 'a', 'm'} includes null",
      "testStatus": "pass",
      "responseStatus": 200,
      "actual": "null",
      "expected": "null",
      "invalid": "false"
    }

"expected" should be "false"