message: fix(Collapse):  fix safari rendering issues
diff: &__title {
  .van-cell__right-icon::before {
  - transform: rotate(90deg);
  + // using translateZ to fix safari rendering issues
  + // see: https://github.com/youzan/vant/issues/8608
  + transform: rotate(90deg) translateZ(0);
  transition: transform @collapse-item-transition-duration;
  }
  