Parent class private fields are not generated

**Code sample**
```dart
class Animal {
@HiveField(0)
int _info;

Animal(this._info);
}

@HiveType(typeId: 0)
class Cat extends Animal {
@HiveField(1)
String name;

Cat(super._info, {required this.name});

Cat.create(this.name) : super(0);
}
```
This generates an error when generating the type adapter: _1 positional argument(s) expected, but 0 found_.

In the generated adapter:
```dart
return Cat(
name: fields[1] as String,
);
```

**Version**
- Platform: iOS, Android, Mac, Windows, Linux, Web
- Flutter version: 3.0.3
- Hive version: 2.2.1