Expose gitlab url in duo workflow GraphQL API

What does this MR do and why?

This MR exposes gitlab_url attribute in the duo workflow GraphQL fetch API. Previously, we added the same attribute in rest API, however, gitlab-org/modelops/applied-ml/code-suggestions/ai-assist!2879 (merged) changed the API to GraphQL from Rest.

References

Example of GraphQL Workflow query

query {
  duoWorkflowWorkflows(last: 1) {
    nodes {
      id
      gitlabUrl
    }
  }
}

Response:

{
  "data": {
    "duoWorkflowWorkflows": {
      "nodes": [
        {
          "id": "gid://gitlab/Ai::DuoWorkflows::Workflow/1",
          "gitlabUrl": "http://gdk.test:3000"
        }
      ]
    }
  },
  "correlationId": "01K069BWV86DNVMDB26VRHT0V7"
}

Screenshots or screen recordings

Before	After

How to set up and validate locally

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