message: Move `update-pr-from-base-branch` button to correct line
  Bug caused by
  From:
  To:
diff: @@ -82,7 +82,7 @@ async function addButton(): Promise<void> {
  return;
  }
  - select('.mergeability-details .merge-message')!.append(createButton(base, head));
  + select('.mergeability-details> :not(.js-details-container) .status-heading')!.append(createButton(base, head));
  }
  function init(): void | false {
  