Updating OrderService.php

Co-authored-by: Kristof, Fooman <[email protected]>

Author: manavluhar

app/code/Magento/Sales/Model/Service/OrderService.php

@@ -272,7 +272,7 @@ public function setState(
         */
         $this->eventManager->dispatch(
             'sales_order_state_change_before',
-            ['order' => $this, 'transport' => $transport, 'transportObject' => $transport]
+            ['order' => $this, 'transport' => $transport, 'order_object' => $order]
         );
         $status = $transport->getStatus();
         $order->setData('state', $transport->getState());