use stock unit for dn line in syn m18

src/main/java/com/ffii/fpsms/m18/service/M18DeliveryOrderService.kt

@@ -322,7 +322,7 @@ open class M18DeliveryOrderService(
 
                                         // Save to delivery_order_line table
 //                                        logger.info("${doLineRefType}: Saving delivery order line...")
-                                        val itemUom = itemId?.let { itemUomService.findSalesUnitByItemId(it) }
+                                        val itemUom = itemId?.let { itemUomService.findStockUnitByItemId(it) }
                                         val saveDeliveryOrderLineRequest = SaveDeliveryOrderLineRequest(
                                             id = existingDeliveryOrderLine?.id,
                                             itemId = itemId,