♻️ refactor(avatar): simplify avatar upload success handler

- 移除handleUploadSuccess函数的fileKey、fileUrl和file参数，简化函数签名
- 保持头像上传成功提示功能不变

src/client/admin-shadcn/components/AvatarSelector.tsx

@@ -101,7 +101,7 @@ const AvatarSelector: React.FC<AvatarSelectorProps> = ({
     setSelectedFile(null);
   };
 
-  const handleUploadSuccess = (fileKey: string, fileUrl: string, file: any) => {
+  const handleUploadSuccess = () => {
     toast.success('头像上传成功！请从列表中选择新上传的头像');
   };