message: Avoid duplicate authors in `clear-pr-merge-commit-message`
diff: @@ -7,10 +7,14 @@ import onPrMergePanelOpen from '../github-events/on-pr-merge-panel-open';
  function init(): void {
  const messageField = select<HTMLTextAreaElement>('#merge_message_field')!;
  - const coAuthorsMatches = messageField.value.matchAll(/co-authored-by: [^\n]+/gi);
  - const coAuthors = [...new Set([...coAuthorsMatches].flat())]; // Deduplicate Co-Authors
  + const deduplicatedAuthors = new Set();
  - messageField.value = coAuthors.join('\n');
  + // This method ensures that "Co-authored-by" capitalization doesn't affect deduplication
  + for (const [, author] of messageField.value.matchAll(/co-authored-by: ([^\n]+)/gi)) {
  + deduplicatedAuthors.add('Co-authored-by: ' + author);
  + }
  +
  + messageField.value = [...deduplicatedAuthors].join('\n');
  }
  void features.add({
  