message: also center chevron in top unread button
diff: @@ -28,7 +28,7 @@ limitations under the License.
  content: "";
  position: absolute;
  top: -8px;
  - left: 11px;
  + left: 10.5px;
  width: 4px;
  height: 4px;
  border-radius: 16px;
  @@ -49,11 +49,12 @@ limitations under the License.
  .mx_TopUnreadMessagesBar_scrollUp::before {
  content: "";
  position: absolute;
  - width: 38px;
  - height: 38px;
  + width: 36px;
  + height: 36px;
  mask-image: url('$(res)/img/icon-jump-to-first-unread.svg');
  mask-repeat: no-repeat;
  - mask-position: 9px 13px;
  + mask-position: center;
  + mask-size: 50%;
  background: $muted-fg-color;
  }
  