purchase_order_supplierinfo_update_triple_discount: update discounts on write

purchase_order_supplierinfo_update_triple_discount/models/purchase_order_line.py

@@ -20,6 +20,12 @@ class PurchaseOrderLine(models.Model):
         ),
     }
 
+    def write(self, vals):
+        res = super().write(vals)
+        if any(field in vals for field in self._SUPPLIERINFO_DISCOUNT_CONFIG):
+            self.update_supplierinfo_price()
+        return res
+
     def _update_supplierinfo(self, seller):
         """Extend supplierinfo update to optionally sync each discount field."""
         self.ensure_one()