[FIX] purchase: cancelled procurement

If two MOs are using the same PO, when we cancel the first MO, the
check availability of second MO is not working.

The incoming shipment of the Purchase Order has the first MO's move_id
as the destination move. When we cancel the first MO, the incoming
shipment of Purchase Order still holds the first MO's move. Because of
that reason, the check availability is not working for the second MO.

While setting the destination move for the stock moves of the incoming
shipment, it should ignore the cancelled procurements.

Closes #17701
opw-748074

Courtesy of @suganthikarunanithi

addons/purchase/models/purchase.py

@@ -673,7 +673,7 @@ class PurchaseOrderLine(models.Model):
         }
         # Fullfill all related procurements with this po line
         diff_quantity = self.product_qty - qty
-        for procurement in self.procurement_ids:
+        for procurement in self.procurement_ids.filtered(lambda p: p.state != 'cancel'):
             # If the procurement has some moves already, we should deduct their quantity
             sum_existing_moves = sum(x.product_qty for x in procurement.move_ids if x.state != 'cancel')
             existing_proc_qty = procurement.product_id.uom_id._compute_quantity(sum_existing_moves, procurement.product_uom)