嵌套数组无法在Vue3模板中呈现

<template>
  <div>
    <ul>
      <li v-for="item in flattenArray" :key="item.id">{{ item.name }}</li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      nestedArray: [
        { id: 1, name: 'Item 1' },
        { id: 2, name: 'Item 2' },
        { id: 3, name: 'Item 3' },
        { id: 4, name: 'Item 4' },
        { id: 5, name: 'Item 5' },
        { id: 6, name: 'Item 6' },
      ],
    };
  },
  computed: {
    flattenArray() {
      // 处理嵌套数组，将其扁平化
      return this.nestedArray.flat();
    },
  },
};
</script>