message: Only show icon for commits in `highlight-closing-prs`
  From:
  To:
diff: @@ -13,6 +13,7 @@ function add(): void {
  .closest('.discussion-item')!
  .querySelector('.issue-num, .commit-id')!;
  const link = ref.closest('a')!.href;
  + const isIssue = ref.classList.contains('issue-num');
  select('.gh-header-meta .TableObject-item')!.after(
  <div className="TableObject-item">
  @@ -20,8 +21,8 @@ function add(): void {
  href={link}
  className="btn btn-outline btn-sm border-blue rgh-closing-pr tooltipped tooltipped-se"
  aria-label={infoBubble.getAttribute('aria-label')!}>
  - {ref.matches('.issue-num') ? icons.openPullRequest() : icons.commit()}
  - {' ' + ref.textContent}
  + {isIssue ? icons.openPullRequest() : icons.commit()}
  + {isIssue ? ' ' + ref.textContent : ''}
  </a>
  </div>
  );
  