unqualified_reference_to_non_local_static_member on static const member

[kzrnm]

Describe the bug

Generator create uncompilable file. unqualified_reference_to_non_local_static_member occurred on static const member.

To Reproduce

Use static const as @Default argument.

todo.dart

import 'package:freezed_annotation/freezed_annotation.dart';

part 'todo.freezed.dart';

@freezed
class Todo with _$Todo {
  const Todo._();

  const factory Todo({
    @Default(defaultValue) int num,
  }) = _Todo;

  static const defaultValue = 20;
}

todo.freezed.dart

class _$_Todo extends _Todo {
  const _$_Todo({this.num = defaultValue}) : super._();

Expected behavior

todo.freezed.dart

class _$_Todo extends _Todo {
  const _$_Todo({this.num = Todo.defaultValue}) : super._();

[rrousselGit]

Duplicate of #123