Resolve "MR widget components have different icons in CE and EE"

What does this MR do?

Backport of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/3669/diffs we forgot to do the same in CE

Does this MR meet the acceptance criteria?

• Review
  • Has been reviewed by Frontend
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?

Closes #42225 (closed)