fix: 修正变量名拼写错误

将 `mate` 修正为 `meta`，确保代码逻辑正确执行

lib/modules/agent/views/message_bubble.dart

@@ -275,8 +275,8 @@ class MessageBubble extends GetView<AgentController> {
           now,
           daylist,
         );
-      } else if (mate!.keys.contains('card_travel')) {
-        final rawList = mate!['card_travel']['items'] as List;
+      } else if (meta!.keys.contains('card_travel')) {
+        final rawList = meta!['card_travel']['items'] as List;
         final travellist =
             rawList.map((e) => Map<String, dynamic>.from(e)).toList();
         // 旅游