refactor 优化图片上传再次点击显示loading

@@ -13,7 +13,7 @@
           >
             <img v-if="devicePic" :src="devicePic" alt="avatar" />
             <div v-else>
-              <loading-outlined v-if="loading"></loading-outlined>
+              <LoadingOutlined v-if="loading" />
               <PlusOutlined v-else />
               <div class="ant-upload-text">图片上传</div>
             </div>
@@ -143,6 +143,7 @@
       // 图片上传
       async function customUpload({ file }) {
         if (beforeUpload(file)) {
+          devicePic.value = '';
           loading.value = true;
           const formData = new FormData();
           formData.append('file', file);