message: Fix emoji sizing bug caused by `reaction-avatars`
  Fixes
diff: @@ -43,7 +43,7 @@ button.reaction-summary-item { /* `button` excludes the "Add reaction" icon */
  }
  /* This image will start at height:0 and will expand once loaded, covering the gray placeholder */
  -.reaction-summary-item img {
  +.reaction-summary-item a img { /* `a` required for #3237 */
  max-width: 100%;
  border-radius: inherit;
  background-color: var(--background);
  