WIP: Resolve "Error 500 and Sidekiq jobs failures when artifacts are in object storage but object storage is disabled" (!4318) · Merge Requests · GitLab.org / GitLab

WIP: Resolve "Error 500 and Sidekiq jobs failures when artifacts are in object storage but object storage is disabled"

## What does this MR do?

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ee/development/changelog.html) added, if necessary
- [ ] [Documentation created/updated](https://docs.gitlab.com/ee/development/doc_styleguide.html)
- [ ] API support added
- [ ] Tests added for this feature/bug
- Review
  - [ ] Has been reviewed by UX
  - [ ] Has been reviewed by Frontend
  - [ ] Has been reviewed by Backend
  - [ ] Has been reviewed by Database
- [ ] Conform by the [merge request performance guides](https://docs.gitlab.com/ee/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ee/blob/master/CONTRIBUTING.md#style-guides)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)
- [ ] Internationalization required/considered
- [ ] If paid feature, have we considered GitLab.com plan and how it works for groups and is there a design for promoting it to users who aren't on the correct plan
- [ ] End-to-end tests pass (`package-qa` manual pipeline job)

## What are the relevant issue numbers?

Closes #4532