feat: 图片上传/回显支持绑定string类型

apps/web-antd/src/views/演示使用自行删除/upload/index.vue

@@ -16,10 +16,24 @@ const fieldOptions = [
   { label: '链接地址', value: 'url' },
 ];
 const fileAccept = ['txt', 'excel', 'word', 'pdf'];
+
+const signleImage = ref<string>('');
 </script>
 
 <template>
   <Page content-class="flex flex-col gap-[12px]">
+    <div class="bg-background flex flex-col gap-[12px] rounded-lg p-6">
+      <Alert
+        :show-icon="true"
+        message="新特性: 单张图片会被绑定为string而非string[]类型 省去手动转换"
+      />
+      <ImageUpload v-model:value="signleImage" :max-number="1" />
+      <Alert
+        :show-icon="true"
+        message="默认给空字符串会被转为[], 上传之后为正常string类型"
+      />
+      <JsonPreview :data="signleImage" />
+    </div>
     <div class="bg-background flex flex-col gap-[12px] rounded-lg p-6">
       <div class="flex gap-[8px]">
         <span>返回字段: </span>