Bug in Code Owners / MR Approvals widget?
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### Summary
I recently added a section [`[Docs Create]`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/CODEOWNERS#L21) with files to this project's `CODEOWNERS` file so that MRs authors can easily spot who to assign for review.
- Problem 1: The MR Approvals widget shows the new `[Docs Create]` section but doesn't show who owns the file.
- Problem 2: Code Owners is considering the group who owns `/doc/` instead of considering the owner to the file `/doc/user/project/merge_requests/merge_request_approvals.md`. It's my understanding that the last rule listed prevails. Is this correct?
What we have in the `CODEOWNERS` file:

What we have in the widget:

Shouldn't it only show the last rule? :thinking: Which is:
`/doc/user/project/merge_requests/merge_request_approvals.md @marcia` => therefore, the widget should show only my username instead of the whole group for `doc/`, no? That's how it works for [`/doc/development/`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/CODEOWNERS#L12), for example.
**Oh! Wait a min!** Maybe the reason is that I'm the MR author (https://gitlab.com/gitlab-org/gitlab/-/merge_requests/39701), therefore, I'm not an eligible approver. In that case, I guess we should hide the "Docs Create" section?
### Steps to reproduce
1. Add a dir to a CODEOWNERS section with a group as owner to the dir.
1. Below the dir, add a new section with a file that belongs to this dir and a user as owner to the file.
1. Change the file and submit a merge request.
1. Open the MR Approvals widget to see who owns the file.
### Example Project
https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/CODEOWNERS#L29 // https://gitlab.com/gitlab-org/gitlab/-/merge_requests/39701
### What is the current *bug* behavior?
- Code Owners considers the group set as owner to a high-level dir as code owner instead of a user set as owner to a file within the folder.
- Doesn't display the avatar of the file's code owner, only the Code Owner's section ("Docs Create") and the file name.
### What is the expected *correct* behavior?
- Consider the last rule and only show the code owner to that file.
- Show the user's avatar.
### Relevant logs and/or screenshots
Added above.
### Output of checks
This bug happens on GitLab.com.
#### Results of GitLab environment info
Env info:
- GitLab.com
- https://gitlab.com/gitlab-org/gitlab/
- https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/CODEOWNERS
- macOS Catalina 10.15.6
- Chrome Version 84.0.4147.89 (Official Build) (64-bit) - zoom 100%
#### Results of GitLab application Check
<details>
<summary>Expand for output related to the GitLab application check</summary>
<pre>
(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)
</pre>
</details>
### Possible fixes
(If you can, link to the line of code that might be responsible for the problem)
issue