UX: Different order of files vs folders when viewing commits or when viewing an MR
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### Summary
UX: Different order of files vs folders when viewing commits or when viewing an MR
### Steps to reproduce
* Create an MR which edits e.g. /folder/file.txt and /folder/subfolder/another-file.txt.
* See the MR changes.
* Merge it and see the commit.
### Example Project
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### What is the current *bug* behavior?
When viewing MRs, folders come first, files last.
When viewing commits, the order is different.
### What is the expected *correct* behavior?
Don't care which one, but the order should be the same.
### Relevant logs and/or screenshots
{width=652 height=344}
{width=592 height=302}
### Output of checks
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#### Results of GitLab environment info
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(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)
(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)
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#### Results of GitLab application Check
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(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:check SANITIZE=true`)
(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true`)
(we will only investigate if the tests are passing)
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### Possible fixes
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### Patch release information for backports
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Refer to the [internal "Release Information" dashboard](https://dashboards.gitlab.net/d/delivery-release_info/delivery3a-release-information?orgId=1)
for information about the next patch release, including the targeted versions, expected release date, and current status.
#### High-severity bug remediation
To remediate high-severity issues requiring an [internal release](https://handbook.gitlab.com/handbook/engineering/releases/internal-releases/) for single-tenant SaaS instances,
refer to the [internal release process for engineers](https://gitlab.com/gitlab-org/release/docs/-/blob/master/general/internal-releases/engineers.md?ref_type=heads).
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