Fixing failed AC-2110 MFTF test from 36463

Author: engcom-Charlie

app/code/Magento/Weee/Test/Mftf/Test/StorefrontFPTMultipleProductOrderTest.xml

@@ -92,6 +92,7 @@
         </actionGroup>
 
         <!-- Select shipping and payment methods -->
+        <waitForElementClickable selector="{{CheckoutShippingMethodsSection.shippingMethodFlatRate}}" stepKey="waitForShippingMethod"/>
         <actionGroup ref="CheckoutSelectFlatRateShippingMethodActionGroup" stepKey="selectFlatRateShippingMethod"/>
         <actionGroup ref="StorefrontCheckoutClickNextOnShippingStepActionGroup" stepKey="clickNext"/>
         <actionGroup ref="CheckoutSelectCheckMoneyOrderPaymentActionGroup" stepKey="clickCheckMoneyOrderPayment"/>