MC-41780: Paypal API improvements

Author: svitja

app/code/Magento/Paypal/Controller/Express/OnAuthorization.php

@@ -114,10 +114,10 @@ public function __construct(
     public function execute(): ResultInterface
     {
         $controllerResult = $this->resultFactory->create(ResultFactory::TYPE_JSON);
-        $quoteId = $this->getRequest()->getParam('quoteId');
+        $quoteId = (int)$this->getRequest()->getParam('quoteId');
         $payerId = $this->getRequest()->getParam('payerId');
         $tokenId = $this->getRequest()->getParam('paymentToken');
-        $customerId = $this->getRequest()->getParam('customerId') ?: $this->_customerSession->getId();
+        $customerId = (int)$this->getRequest()->getParam('customerId') ?: $this->_customerSession->getId();
 
         try {
             if ($quoteId) {