[FIX] mrp: trigger scheduler in manufacturing multi steps

Usecase to reproduce:
- Enable multi steps manufacturing (pbm at least)
- Set a RR 0 0 on a component
- Confirm the MO

-> The scheduler is not run for the components

It happens because only the moves raw are confirm and not
the pickings from the procurement group (like in SO)

Part-of: odoo/odoo#114738