uniapp，vue3中使用ref绑定input，input.value.value赋值会报错

<template>  
  <view class="phone-register">  
      <input v-model="inputValue" type="text" ref="input" placeholder="请输入">  
  </view>  
</template>  

<script lang="ts" setup>  

import { ref, reactive, Ref, onMounted, defineEmits, defineExpose, defineProps, PropType } from "vue";  
import { onLoad } from "@dcloudio/uni-app";  

interface loginPhone {  
    phone: string;  
    code: string;  
}  
const formData = ref<loginPhone>({  
    phone: "123132",  
    code: ""  
});  

const input = ref(null);  
const inputValue = ref("")  
onMounted(() => {  
    console.log(input.value)  
    input.value.value = "456897"  
})  
</script>  

<style lang="scss" scoped>  
.phone-register {  
    padding: 30rpx;  
    &-logo {  
        width: 200rpx;  
        height: 200rpx;  
        margin: 50rpx auto;  
        &-image {  
            width: 100%;  
            height: 100%;  
        }  
    }  

}  
</style>```  

捅过ref获取input的dom，拿到的不是dom，而是proxy，里面的属性都是只读，我在其他vue3项目中是可以正确获取到dom，而不是proxy  

有没有老哥遇到这个问题，hbuilderx 3.7.3版本，运行到谷歌浏览器  
Uncaught (in promise) TypeError: 'set' on proxy: trap returned falsish for property 'value'