Update action group due to changes in mainline

Author: VladimirZaets

app/code/Magento/Sales/Test/Mftf/Test/AdminCreateOrderWithDateTimeOptionUITest.xml

@@ -32,7 +32,7 @@
             <deleteData createDataKey="createCustomer" stepKey="deleteSimpleCustomer"/>
         </after>
 
-        <actionGroup ref="navigateToNewOrderPageExistingCustomer" stepKey="navigateToNewOrderWithExistingCustomer">
+        <actionGroup ref="NavigateToNewOrderPageExistingCustomerActionGroup" stepKey="navigateToNewOrderWithExistingCustomer">
             <argument name="customer" value="$$createCustomer$$"/>
         </actionGroup>