refactor 优化图片上传再次点击显示loading

@@ -19,7 +19,7 @@
         >
           <img v-if="tenantLogo" :src="tenantLogo" alt="avatar" />
           <div v-else>
-            <loading-outlined v-if="loading"></loading-outlined>
+            <LoadingOutlined v-if="loading" />
             <plus-outlined v-else />
             <div class="ant-upload-text">上传</div>
           </div>
@@ -59,8 +59,8 @@
 
       async function customUpload({ file }) {
         if (beforeUpload(file)) {
+          tenantLogo.value = '';
           loading.value = true;
-
           const formData = new FormData();
           formData.append('file', file);
           const response = await upload(formData);