Cluster Deletion: Pass OIDC token for a new policy

[moklidia]

For description see https://github.com/UffizziCloud/uffizzi_platform/issues/1305

[moklidia]

The token is already passed to the backend

    def handle_delete_cluster(cluster_name)
      params = {
        cluster_name: cluster_name,
        oidc_token: oidc_token,
      }
      response = delete_cluster(server, project_slug, params)

      if ResponseHelper.no_content?(response)
        Uffizzi.ui.say("Cluster #{cluster_name} deleted")
      else
        ResponseHelper.handle_failed_response(response)
      end
    end