magento/magento2-page-builder#559: User sees no predefined gutters

- Fixing failing tests

Author: dhaecker

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

@@ -54,6 +54,7 @@
             <argument name="productName" value="$$simpleProduct.name$$"/>
         </actionGroup>
         <reloadPage stepKey="reloadPage"/>
+        <waitForPageLoad stepKey="waitForPageLoad"/>
 
         <!--Check the minicart is empty and verify AssertProductAbsentInMiniShoppingCart-->
         <actionGroup ref="AssertMiniCartEmptyActionGroup" stepKey="miniCartEnpty"/>