[dart][dart-dio-next] No serializer builder factory is generated for form parameters

Created by: ahmednfwela

Description

BuiltCollections referenced in form parameters don't get addBuilderFactory generated for them in the serializers.dart file

openapi-generator version

5.2.0

OpenAPI declaration file content or url

SomeEndPoint:
  put:
    requestBody:
      content:
        multipart/form-data:
          schema:
            type: object
            properties:
              HallImageIds:
                type: array
                items:
                  type: string
          encoding:
            HallImageIds:
              style: form
    responses:
      '200':
        description: Success

Workaround

create a fake controller in the specification and make it return List<string>