Parameters getList support defaultValue

[lwj1994]

generator will generate

queryParams.getList(
                'relationships',
                const [],
              )

but getList dosent support default value.

full code:

@RoutePage()
class AddPalSlipRelationshipPage extends LinjiePage {
  final List<String> relationships;

  const AddPalSlipRelationshipPage(
      {super.key, @QueryParam("relationships") this.relationships = const [],});

  @override
  ConsumerState<ConsumerStatefulWidget> createState() {
    return _SelectRelationshipPage();
  }
}

  static PageInfo page = PageInfo(
    name,
    builder: (data) {
      final queryParams = data.queryParams;
      final args = data.argsAs<AddPalSlipRelationshipRouteArgs>(
          orElse: () => AddPalSlipRelationshipRouteArgs(
                  relationships: queryParams.getList(
                'relationships',
                const [],
              )));
      return AddPalSlipRelationshipPage(
        key: args.key,
        relationships: args.relationships,
      );
    },
  );

[ezamagni]

@Milad-Akarie this PR should be merges ASAP.
It fixes an issue i'm having in migrating a large codebase from auto_route 8.x to version 9.