[FIX] procurement_jit: Trigger scheduler at SO confirmation

Usecase to reproduce:
- Create a Product A with a supplier.
- Put 10 in stock
- Create a RR with min 5 and max 10
- Create a SO for 7 products and confirm it

The RFQ is not created.

It happens because the trigger scheduler is set on picking
action_confirm. Not on move _action_confirm to avoid performance issue.
However a SO will launch procurement rules that will create moves
and confirm them. But it will never call action_confirm on the picking
itself and thus never trigger the scheduler.

closes odoo/odoo#57540

X-original-commit: 08af6a3f663abb49d2e77c706e85118a7199ef89
Signed-off-by: Arnold Moyaux <amoyaux@users.noreply.github.com>

addons/procurement_jit/sale.py

@@ -13,5 +13,7 @@ class SaleOrderLine(models.Model):
         for order in orders:
             reassign = order.picking_ids.filtered(lambda x: x.state=='confirmed' or (x.state in ['waiting', 'assigned'] and not x.printed))
             if reassign:
+                # Trigger the Scheduler for Pickings
+                reassign.action_confirm()
                 reassign.action_assign()
         return res