Update GuestCheckoutFillingShippingSectionActionGroup.xml

Author: akaash-mehra

app/code/Magento/Checkout/Test/Mftf/ActionGroup/GuestCheckoutFillingShippingSectionActionGroup.xml

@@ -28,6 +28,7 @@
         <selectOption selector="{{CheckoutShippingSection.region}}" userInput="{{customerAddressVar.state}}" stepKey="selectRegion"/>
         <fillField selector="{{CheckoutShippingSection.postcode}}" userInput="{{customerAddressVar.postcode}}" stepKey="enterPostcode"/>
         <fillField selector="{{CheckoutShippingSection.telephone}}" userInput="{{customerAddressVar.telephone}}" stepKey="enterTelephone"/>
+        <waitForPageLoad stepKey="waitForLoadingMask"/>
         <waitForElementClickable selector="{{CheckoutShippingMethodsSection.checkShippingMethodByName('shippingMethod')}}" stepKey="waitForShippingMethod"/>
         <click selector="{{CheckoutShippingMethodsSection.checkShippingMethodByName('shippingMethod')}}" stepKey="selectShippingMethod"/>
         <waitForPageLoad stepKey="waitForShippingLoading"/>