message: feat(Switch): optimize animation timing function
diff: background-color: @switch-node-background-color;
  border-radius: 100%;
  box-shadow: @switch-node-box-shadow;
  - transition: transform @switch-transition-duration;
  + transition: transform @switch-transition-duration cubic-bezier(.3, 1.05, .4, 1.05);
  }
  &__loading {
  