message: TabsItem: updated transform-origin, now using calc()
diff: .TabsItem__after .Icon--dropdown_16 {
  color: var(--header_tint);
  - transform-origin: 50% 55%;
  + transform-origin: 50% calc(50% + 1px);
  transform: translateY(1px);
  margin-left: 6px;
  }
  