[project] Onboarding

- Task: https://www.odoo.com/web/#id=10467&view_type=form&model=project.task&action=333&active_id=131
- Pad: https://pad.odoo.com/p/r.5sIeAQv7J7qXYCmI
I don't know what you try to do, but it seems curious. The spec says that without project, the stage should be a default one. Here you are returning False.