This task will:
- Clean the code (e.g. the production's moves are now created directly)
- Have the same behavior when creating object in the UI or directly in
backend
It's mainly on the `mrp.production` object and most of the computed
stored field are used as default value or act like an onchange on draft
production. Once the production order is validated, it's only modify
by direct write
Task-2709753
closesodoo/odoo#83576
Related: odoo/enterprise#24405
Signed-off-by: Arnold Moyaux <arm@odoo.com>