fix: make cubit custom implementation simpler

packages/wyatt_form_bloc/lib/src/presentation/features/form_data/form_data_cubit.dart

@@ -21,6 +21,7 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:wyatt_form_bloc/src/core/enums/form_status.dart';
 import 'package:wyatt_form_bloc/src/core/enums/set_operations.dart';
 import 'package:wyatt_form_bloc/src/core/enums/validation_error.dart';
+import 'package:wyatt_form_bloc/src/data/form/wyatt_form_impl.dart';
 import 'package:wyatt_form_bloc/src/domain/form/wyatt_form.dart';
 import 'package:wyatt_form_bloc/src/domain/input_validators/form_input_validator.dart';
 

packages/wyatt_form_bloc/lib/src/presentation/features/form_data/form_data_state.dart

@@ -16,19 +16,25 @@
 
 part of 'form_data_cubit.dart';
 
+// ignore: must_be_immutable
 abstract class FormDataState extends Equatable {
   /// Global status of a form.
   final FormStatus status;
 
   /// FormData with all inputs, and associated metadata.
-  final WyattForm form;
+  late WyattForm form;
 
   /// Optional error message.
   final String? errorMessage;
 
-  const FormDataState({
-    required this.form,
+  FormDataState({
+    WyattForm? form,
     this.status = FormStatus.pure,
     this.errorMessage,
-  });
+  }) {
+    this.form = form ?? WyattFormImpl(const [], name: '');
+  }
+
+  @override
+  List<Object?> get props => [status, form, errorMessage];
 }

packages/wyatt_form_bloc/lib/src/presentation/features/form_data_impl/form_data_state_impl.dart

@@ -16,8 +16,9 @@
 
 part of 'form_data_cubit_impl.dart';
 
+// ignore: must_be_immutable
 class FormDataStateImpl extends FormDataState {
-  const FormDataStateImpl({
+  FormDataStateImpl({
     required super.form,
     super.status = FormStatus.pure,
     super.errorMessage,