Use GitLab UI Utility Classes in Merge Request Title Partial
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The following discussions from !61605 should be addressed:
- [ ] @sming-gitlab started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61605#note_574448662):
> **nitpick**: would this be a good opportunity to use our `gl` util classes?
>
> `gl-pt-0` and `gl-pb-0`
- [ ] @sming-gitlab started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61605#note_574448676):
> **nitpick**: same thoughts as above, maybe an opportunity to use our `gl` util classes 😁
>
> ```
> gl-float-left
> ```
- [ ] @sming-gitlab started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61605#note_574448682):
> **nitpick**: same thoughts as above, maybe an opportunity to use our `gl` util classes 😁
>
> ```
> gl-display-none
> gl-md-display-block (👈 this should be double checked 🤔)
> ```
- [ ] @sming-gitlab started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61605#note_574448697):
> **nitpick**: same thoughts as above, maybe an opportunity to use our `gl` util classes 😁
>
> ```
> gl-float-right
> gl-display-block
> gl-sm-display-none (👈 this should be double checked 🤔)
> ```
issue