打开IM开关，取消加群和退群的代码注释，调整群组Http请求的参数名

lib/bloc/web_cubit.dart

@@ -452,7 +452,7 @@ class WebCubit extends Cubit<WebState> with WidgetsBindingObserver {
         imService.registerPush();
         // 处理加群和退群
         if (state.loginOpFlag) {
-          // imService.joinAndLeaveGroup(state.userCode!);
+          imService.joinAndLeaveGroup(state.userCode!);
         }
       } else {
         debugPrint("缓存自动登录处，IM 登录失败");

lib/config/constant.dart

@@ -122,6 +122,6 @@ class Constant {
   static const String hasShownPrivacyFirstTimeKey = 'has_shown_privacy_first_time';
 
   /// 测试阶段使用
-  static const bool needIM = false;
+  static const bool needIM = true;
   static const bool needUpgrade = true;
 }

lib/data/repositories/subs_repository.dart

@@ -18,7 +18,7 @@ class SubsRepository {
         {
           "type": type,
           "userid": userid,
-          "classCode": classCode,
+          "classCodes": classCode,
         },
       );
       return resp.statusCode == HttpStatus.ok ? resp.data : null;