ACP2E-1143: update wait time for MC-39007 for correct grand total validation

Author: alzota

app/code/Magento/Multishipping/Test/Mftf/Test/StorefrontDisableMultishippingModeCheckoutOnBackToCartTest.xml

@@ -60,12 +60,12 @@
         <waitForElement time="30" selector="{{CheckoutCartSummarySection.shippingMethodForm}}" stepKey="waitForShippingMethodForm"/>
         <waitForElementVisible time="30" selector="{{CheckoutCartSummarySection.total}}" stepKey="waitForTotalElement"/>
         <waitForPageLoad stepKey="waitForGrandTotalToLoad"/>
-        <grabTextFrom selector="{{CheckoutPaymentSection.orderSummaryTotal}}" stepKey="grabOrderTotal"/>
+        <grabTextFrom selector="{{CheckoutPaymentSection.orderSummaryTotal}}" stepKey="grabTotal"/>
 
         <actionGroup ref="StorefrontGoCheckoutWithMultipleAddressesActionGroup" stepKey="goCheckoutWithMultipleAddresses"/>
         <actionGroup ref="StorefrontCartPageOpenActionGroup" stepKey="goBackToShoppingCartPage"/>
         <actionGroup ref="AssertStorefrontCheckoutPaymentSummaryTotalActionGroup" stepKey="assertSummaryTotal">
-            <argument name="orderTotal" value="{$grabOrderTotal}"/>
+            <argument name="orderTotal" value="{$grabTotal}"/>
         </actionGroup>
     </test>
 </tests>