Fix find file navigation links

## What does this MR do?
Modified the tables in [find file page](https://gitlab.com/ClemMakesApps/gitlab-ce/find_file/master), so that clicking the entire row will go to the file rather than forcing the user to click on the text

## Are there points in the code the reviewer needs to double check?
We should be good

## Why was this MR needed?
Resolve UI inconsistency. Other pages UX indicate that the rows are clickable when highlighted. It is not the case for this page

## Screenshots (if relevant)
Before:
![tdo6Jt3xmd](/uploads/31e7654c49bb141002cfec4ce859fb46/tdo6Jt3xmd.gif)

After:
![NdiIqqHa7R](/uploads/fa440ebaa847064ff098a98dfb7fef57/NdiIqqHa7R.gif)


## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #22016

See merge request !6290