PaymentRequestUpdateEvent.updateWith() needs to be called immediately

## updateWith() method

Click on each button in sequence from top to bottom without refreshing the page. Each button will bring up the Payment Request UI window.

When the payment sheet is shown, select a different shipping address once. Then pay.

3. When the payment sheet is shown, select a different shipping address once, then change shipping option once. Then pay.

If you find a buggy test, please file a bug and tag one of the owners.