ENGCOM-5115: Replace hardcoded CarierCode from createShippingMethod() #22889

 - Merge Pull Request #22889 from wigman/magento2:wigman-extendable-tablerates
 - Merged commits:
   1. 405694d

Author: magento-engcom-team

app/code/Magento/OfflineShipping/Model/Carrier/Tablerate.php

@@ -278,7 +278,7 @@ private function createShippingMethod($shippingPrice, $cost)
         /** @var  \Magento\Quote\Model\Quote\Address\RateResult\Method $method */
         $method = $this->_resultMethodFactory->create();
 
-        $method->setCarrier('tablerate');
+        $method->setCarrier($this->getCarrierCode());
         $method->setCarrierTitle($this->getConfigData('title'));
 
         $method->setMethod('bestway');