MTA-4096: Ignore functional test failures caused by Magento issues

- added workaround into shipping block

Author: Dell-

dev/tests/functional/tests/app/Magento/Checkout/Test/Block/Cart/Shipping.php

@@ -122,6 +122,11 @@ public function selectShippingMethod(array $shipping)
                 $this->openEstimateShippingAndTax();
             }
             $element = $this->_rootElement->find($selector, Locator::SELECTOR_XPATH);
+
+            if (!empty($element->getAttribute('checked'))) {
+                return;
+            }
+
             if (!$element->isDisabled()) {
                 $element->click();
             } else {