feat(chat): API method info success

lib/presentation/chat/chat_screen/models/chat_model.dart

@@ -4,9 +4,11 @@ import 'package:equatable/equatable.dart';
 
 /// This class defines the variables used in the [chat_screen],
 /// and is typically used to hold data that is passed between different parts of the application.
+
 class ChatModel extends Equatable {
-  String? chatID;
-  ChatModel({String? chatID});
+  final String chatID;
+
+  ChatModel({required String chatID}) : chatID = chatID;
 
   ChatModel copyWith(String chatID) {
     return ChatModel(chatID: chatID);