Describe the bug
Trying to set up roles after the fresh install of 0.14.1, but list of roles is empty.

To Reproduce
Steps to reproduce the behavior:

1. Fresh install
2. Log in as superuser
3. Got to "Settings" -> "Permissions" -> "Roles"
4. See empty list

Expected behavior
Default roles should be listed

Screenshots

Additional context
The same problem was mentioned here: #5966

Request to GraphQL in devconsole:

{
  "data": {
    "listRoles": {
      "start": 0,
      "count": 10,
      "total": 0,
      "roles": [],
      "__typename": "ListRolesResult"
    }
  },
  "extensions": {}
}

Response:

{
    "data": {
        "listRoles": {
            "start": 0,
            "count": 10,
            "total": 0,
            "roles": [],
            "__typename": "ListRolesResult"
        }
    },
    "extensions": {}
}

Roles can be found in the database of Datahub instance.