关闭时向右上角缩小并淡出

const animationDuration = 500; // 动画时间

const handleClose = () => {
  setExiting(true);
  setTimeout(() => {
    setExiting(false);
    setOpen(false);
  }, animationDuration);
};

PaperProps={{
  sx: {
    transition: `all ${animationDuration}ms ease, opacity ${animationDuration}ms ease`,
  },
}}