Keep some routes without `-` for non-redirect-following clients
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=118850) </details> <!--IssueSummary end--> From https://gitlab.com/gitlab-org/gitlab/issues/118840: >>> Some clients don't follow redirects and we should think carefully about breaking them (`/raw/`) >>> Also: >>> we have .diff and .patch routes that are meant for machine consumption. Don't know how much they are used. We could considering doing a log analysis where we look at the user agent. >>> It seems like it would be worth making some kind of commitment to 'never' break raw URLs, and possibly some others too.
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