[FIX] purchase_stock_ux:add context to write method

closes #173

Related: ingadhoc/sale#683
Related: ingadhoc/stock#385
Signed-off-by: Juan Carreras <jc@adhoc.com.ar>

purchase_stock_ux/models/purchase_order.py

@@ -71,6 +71,7 @@ def _compute_delivery_status(self):
                 order.delivery_status = 'no'
 
     def write(self, values):
+        self = self.with_context(cancel_from_order=True)
         self.check_force_delivered_status(values)
         return super().write(values)