chore: 更新国际化翻译及 UI 组件优化

apps/lib/features/contacts/data/apis/friends_api.dart

@@ -113,13 +113,15 @@ class FriendRequestResponse {
   });
 
   factory FriendRequestResponse.fromJson(Map<String, dynamic> json) {
+    final rawContent = json['content'] as Map<String, dynamic>?;
+    final content = rawContent?['message'] as String?;
     return FriendRequestResponse(
       id: json['id'] as String,
       sender: UserBasicInfo.fromJson(json['sender'] as Map<String, dynamic>),
       recipient: UserBasicInfo.fromJson(
         json['recipient'] as Map<String, dynamic>,
       ),
-      content: json['content'] as String?,
+      content: content,
       status: json['status'] as String,
       createdAt: DateTime.parse(json['created_at'] as String),
     );