Runners jobs API - sort desc does not work

Summary

Trying to sort runner jobs by descending ID does not work. Jobs are always returned in ascending ID order.

It would nice if you could order_by anything other by id too, for example branch.

Steps to reproduce

Gitlab 13.5.4 Premium Omnibus

1. Call the Runner jobs API with sort=desc (GET /runners/:id/jobs?sort=desc)
2. Results are ordered by ascending job ID

What is the current bug behavior?

Results are always ordered by ascending job ID

What is the expected correct behavior?

Results are ordered by descending job ID if sort=desc passed.

Relevant logs and/or screenshots

$ curl --silent -H 'PRIVATE-TOKEN: xx' -X GET -k 'https://gitlab.example.com/api/v4/runners/1337/jobs?sort=desc' | jq '.[].id'
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