fix(Upload): 🐛 去除单图片上传无用的v-model绑定

Author: cshaptx4869

src/components/Upload/SingleImageUpload.vue

@@ -1,7 +1,6 @@
 <!-- 单图上传组件 -->
 <template>
   <el-upload
-    v-model="modelValue"
     class="single-upload"
     list-type="picture-card"
     :show-file-list="false"