[BUG] [Java Service]"machineTranslation" item as response data in key-based GET API.

Describe the bug
commit:2a16c214690243b83109a776751ed50773689bf7
"machineTranslation" item as response data in key-based GET API.
GET [/i18n/api/v2/translation/products/{productName}/versions/{version}/locales/{locale}/components/{component}/keys]
GET [/i18n/api/v2/translation/products/{productName}/versions/{version}/locales/{locale}/components/{component}/keys/{key}]
GET [/i18n/api/v1/translation/product/{productName}/component/{component}/key/{key}]
GET [/i18n/api/v1/translation/product/{productName}/key/{key}]

To Reproduce
Steps to reproduce the behavior:

1. Go to 'GET [/i18n/api/v2/translation/products/{productName}/versions/{version}/locales/{locale}/components/{component}/keys]' API.
2. Input valid product/version/locale/component/key in this API:
   http://localhost:8091/i18n/api/v2/translation/products/VMwareVIP2018/versions/1.1.0/locales/en/components/Test.ABC_abc-123/keys?keys=Test.ABC_abc-123&pseudo=false
3. See the response:

{
  "response": {
    "code": 200,
    "message": "OK",
    "serverTime": ""
  },
  "signature": "",
  "data": {
    "productName": "VMwareVIP2018",
    "version": "1.1.0",
    "dataOrigin": "",
    "pseudo": false,
    "machineTranslation": false,
    "component": "Test.ABC_abc-123",
    "messages": {
      "Test.ABC_abc-123": "The 1st Notes"
    },
    "locale": "en",
    "status": "",
    "id": 0
  }
}

Expected behavior
As there is no machineTranslation parameter in API input, it is redundant and unnecessary in response.

Start by reproducing the response with the listed v1 and v2 key-based GET endpoints, using the example request and checking the returned data object. Trace the response model or serialization path for these endpoints and confirm that the redundant machineTranslation field is absent from each response when the input has no such parameter.