message: Avoid `reactions-avatars` style conflicts on Releases
diff: -.reaction-summary-item {
  +.reaction-summary-item:not(.js-reaction-group-button) {
  padding-right: 0.7em !important;
  padding-left: 0.7em !important;
  }
  -button.reaction-summary-item { /* `button` excludes the "Add reaction" icon */
  +button.reaction-summary-item:not(.js-reaction-group-button) { /* `button` excludes the "Add reaction" icon */
  border-top: 1px solid var(--github-border-color); /* Required when the second line is longer than the first line */
  border-bottom: 1px solid var(--github-border-color); /* Required when the first line is longer than the second line */
  margin-bottom: -1px; /* Makes up for `order-bottom` */
  @@ -13,7 +13,7 @@ button.reaction-summary-item { /* `button` excludes the "Add reaction" icon */
  margin-top: -1px; /* Makes up for `.reaction-summary-item {border-top}` */
  }
  -.reaction-summary-item span {
  +.reaction-summary-item:not(.js-reaction-group-button) span {
  display: inline-block;
  width: 2em;
  height: 2em;
  @@ -25,20 +25,20 @@ button.reaction-summary-item { /* `button` excludes the "Add reaction" icon */
  font-size: 10px; /* Base sizer */
  }
  -.reaction-summary-item span:first-of-type {
  +.reaction-summary-item:not(.js-reaction-group-button) span:first-of-type {
  margin-left: 0.5em;
  }
  -.review-comment .reaction-summary-item span {
  +.review-comment .reaction-summary-item:not(.js-reaction-group-button) span {
  font-size: 9px;
  }
  -.discussion-post .reaction-summary-item span {
  +.discussion-post .reaction-summary-item:not(.js-reaction-group-button) span {
  margin-top: -1px;
  }
  /* This image will start at height:0 and will expand once loaded, covering the gray placeholder */
  -.reaction-summary-item span img { /* `span` required for #3237 */
  +.reaction-summary-item:not(.js-reaction-group-button) span img { /* `span` required for #3237 */
  width: 100%;
  background-color: var(--color-bg-info, #fff);
  }
  