Simplify approvals badge in the merge requests list
<!--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=456272) </details> <!--IssueSummary end--> The following discussion from !149024 should be addressed: - [ ] @slashmanov started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/149024#note_1859473991): (+1 comment) > WDYT of just removing the icon when there's no self approval? > > ![image](/uploads/62c89d1d148187e5bde20cd48b1293ac/image.png){height=120} > > Alternatively, we could simplify that like this: `👨✓ 0/1` instead of `👨✓ 0 of 1 Approvals`. It just feels weird that all the other statuses are using icons but the approval status has it spelled out.
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