CartStalePricingValidationActivity activity is responsible for validating that the cart and its items have the actual (latest) prices.
If the new cart total is less than the previous the cart will be updated with the new prices, and if the property
true the exception
is thrown with the failure type
If the new cart total is higher than the previous the cart will be updated with the new prices,
and the exception
CheckoutWorkflowActivityException will be thrown with the failure type