我测试了props为对象时，异步更新，子组件的响应没有问题，但是数组类型的更新却不成功。有人知道怎么做吗？
demo代码在这里

<div id="hello-vue" class="demo">
{{ message }}
<todo-item :todos="mylist" />
</div>

let mylist = Vue.reactive([
  { text: "init todo text" },
  { text: "init todo text2" },
  { text: "init todo text3" },
]);
Vue.onMounted(() => {
  console.log("main component");
  setTimeout(() => {
    console.log("2s later");
    mylist = [
      { text: "changed todo 2s" },
      { text: "changed todo 2s" },
      { text: "changed todo 2s" },
    ];
  }, 2000);
});