MC-37820: [UX] Payment methods list is not refreshed on billing address change

Author: OlgaVasyltsun

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

@@ -77,6 +77,7 @@
 
         <!-- Check order summary in checkout -->
         <waitForElement selector="{{CheckoutPaymentSection.paymentSectionTitle}}" stepKey="waitForPaymentSectionLoaded"/>
+        <waitForAjaxLoad stepKey="waitForAjaxLoad"/>
         <click selector="{{CheckoutPaymentSection.placeOrder}}" stepKey="clickPlaceOrderButton"/>
         <seeElement selector="{{CheckoutSuccessMainSection.success}}" stepKey="orderIsSuccessfullyPlaced"/>
         <grabTextFrom selector="{{CheckoutSuccessMainSection.orderNumber22}}" stepKey="grabOrderNumber"/>

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

@@ -87,6 +87,7 @@
 
         <!-- Check order summary in checkout -->
         <waitForElement selector="{{CheckoutPaymentSection.paymentSectionTitle}}" stepKey="waitForPaymentSectionLoaded"/>
+        <waitForAjaxLoad stepKey="waitForAjaxLoad"/>
         <click selector="{{CheckoutPaymentSection.placeOrder}}" stepKey="clickPlaceOrderButton"/>
         <seeElement selector="{{CheckoutSuccessMainSection.success}}" stepKey="orderIsSuccessfullyPlaced"/>
         <grabTextFrom selector="{{CheckoutSuccessMainSection.orderNumber22}}" stepKey="grabOrderNumber"/>

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

@@ -71,6 +71,7 @@
 
         <!-- Check order summary in checkout -->
         <waitForElement selector="{{CheckoutPaymentSection.paymentSectionTitle}}" stepKey="waitForPaymentSectionLoaded"/>
+        <waitForAjaxLoad stepKey="waitForAjaxLoad"/>
         <click selector="{{CheckoutPaymentSection.placeOrder}}" stepKey="clickPlaceOrderButton"/>
         <seeElement selector="{{CheckoutSuccessMainSection.success}}" stepKey="orderIsSuccessfullyPlaced"/>
         <grabTextFrom selector="{{CheckoutSuccessMainSection.orderNumber22}}" stepKey="grabOrderNumber"/>