fix(上传组件): 限制音频上传格式为mp3,wav,aac

 <!--
  * @Date: 2025-06-03 09:41:41
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-06-06 21:17:15
+ * @LastEditTime: 2025-06-13 14:34:57
  * @FilePath: /mlaj/src/views/checkin/upload/audio.vue
  * @Description: 音视频文件上传组件
 -->
@@ -17,7 +17,7 @@
         :after-read="afterRead"
         @delete="onDelete"
         multiple
-        accept="audio/*"
+        accept=".mp3,.wav,.aac"
         result-type="file"
         upload-icon="plus"
         :deletable="false"
@@ -29,7 +29,7 @@
       </van-row>
       <van-divider />
       <div class="mt-2 text-xs text-gray-500">最多上传{{ max_count }}个文件，每个不超过20M</div>
-      <div class="mt-2 text-xs text-gray-500">上传类型:&nbsp;音频文件</div>
+      <div class="mt-2 text-xs text-gray-500">上传类型:&nbsp;.mp3,.wav,.aac 格式音频文件</div>
     </div>
 
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