Changes to GET /admin-api/v1/exam/seb-settings/:modelId/active-seb-clients

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 429

added the non-success response with the status 500