Fixes various copyWith issues where the generated code was invalid

packages/_internal/lib/models.freezed.dart

@@ -1,7 +1,7 @@
 // coverage:ignore-file
 // GENERATED CODE - DO NOT MODIFY BY HAND
 // ignore_for_file: type=lint
-// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
 
 part of 'models.dart';
 
@@ -537,6 +537,8 @@ class _$_ConstructorDetails extends _ConstructorDetails {
   final List<Property> _impliedProperties;
   @override
   List<Property> get impliedProperties {
+    if (_impliedProperties is EqualUnmodifiableListView)
+      return _impliedProperties;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_impliedProperties);
   }
@@ -554,34 +556,41 @@ class _$_ConstructorDetails extends _ConstructorDetails {
   final List<String> _withDecorators;
   @override
   List<String> get withDecorators {
+    if (_withDecorators is EqualUnmodifiableListView) return _withDecorators;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_withDecorators);
   }
 
   final List<String> _implementsDecorators;
   @override
   List<String> get implementsDecorators {
+    if (_implementsDecorators is EqualUnmodifiableListView)
+      return _implementsDecorators;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_implementsDecorators);
   }
 
   final List<String> _decorators;
   @override
   List<String> get decorators {
+    if (_decorators is EqualUnmodifiableListView) return _decorators;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_decorators);
   }
 
   final List<DeepCloneableProperty> _cloneableProperties;
   @override
   List<DeepCloneableProperty> get cloneableProperties {
+    if (_cloneableProperties is EqualUnmodifiableListView)
+      return _cloneableProperties;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_cloneableProperties);
   }
 
   final List<AssertTemplate> _asserts;
   @override
   List<AssertTemplate> get asserts {
+    if (_asserts is EqualUnmodifiableListView) return _asserts;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_asserts);
   }
@@ -1361,13 +1370,16 @@ class _$_Data implements _Data {
   final List<String> _concretePropertiesName;
   @override
   List<String> get concretePropertiesName {
+    if (_concretePropertiesName is EqualUnmodifiableListView)
+      return _concretePropertiesName;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_concretePropertiesName);
   }
 
   final List<ConstructorDetails> _constructors;
   @override
   List<ConstructorDetails> get constructors {
+    if (_constructors is EqualUnmodifiableListView) return _constructors;
     // ignore: implicit_dynamic_type
     return EqualUnmodifiableListView(_constructors);
   }