fix: support string type in v-for

[Teemwu]

No description provided.

[johnsoncodehk]

Hi @Teemwu, could you give me an example of what is the problem to solve?

[Teemwu]

Hi @johnsoncodehk, when I use a string in v-for, volar will warn, but it can be rendered by vue.

<template>
  <div v-for="item in message" :key="item">{{ item }}</div>
</template>

<script setup lang="ts">
import { ref } from 'vue'

const message = ref('Foo')
</script>

[johnsoncodehk]

LGTM, thanks!