message: Restore `reactions-avatars` again
diff: @@ -2,12 +2,10 @@ import './reactions-avatars.css';
  import React from 'dom-chef';
  import select from 'select-dom';
  import {flatZip} from 'flat-zip';
  -import domLoaded from 'dom-loaded';
  import * as pageDetect from 'github-url-detection';
  import features from '.';
  import onReplacedElement from '../helpers/on-replaced-element';
  -import {observeOneMutation} from '../helpers/simplified-element-observer';
  import {getUsername, isFirefox} from '../github-helpers';
  const arbitraryAvatarLimit = 36;
  @@ -52,23 +50,7 @@ function getParticipants(container: HTMLElement): Participant[] {
  return participants;
  }
  -function loadUsernames(commentReactions: Element): void {
  - commentReactions.firstElementChild!.dispatchEvent(new MouseEvent('mouseenter'));
  -}
  -
  async function showAvatarsOn(commentReactions: Element): Promise<void> {
  - // The event listener might not have been attached yet, so we can try twice
  - await domLoaded;
  - loadUsernames(commentReactions);
  - setTimeout(loadUsernames, 1000, commentReactions);
  -
  - await observeOneMutation(commentReactions.firstElementChild!, {
  - attributes: true,
  - attributeFilter: [
  - 'aria-label'
  - ]
  - });
  -
  const avatarLimit = arbitraryAvatarLimit - (commentReactions.children.length * approximateHeaderLength);
  const participantByReaction = select
  