Fix for randomly failed test

Author: Stanislav Idolov

app/code/Magento/Checkout/Test/Mftf/Test/StorefrontCustomerCheckoutOnLoginWhenGuestCheckoutIsDisabledTest.xml

@@ -61,6 +61,7 @@
             <argument name="customerPwd" value="$$createCustomer.password$$"/>
         </actionGroup>
         <waitForElementVisible selector="{{CheckoutCartSummarySection.proceedToCheckout}}" stepKey="waitProceedToCheckout"/>
+        <scrollTo selector="{{CheckoutCartSummarySection.proceedToCheckout}}" stepKey="scrollToGoToCheckout"/>
         <click selector="{{CheckoutCartSummarySection.proceedToCheckout}}" stepKey="goToCheckout1"/>
         <waitForPageLoad stepKey="waitForShippingMethodSectionToLoad"/>
         <actionGroup ref="StorefrontCheckoutClickNextButtonActionGroup" stepKey="clickOnNextButton"/>