Don't receive offer status update when provision smart wallet dialog dismissed

[samsiegart]

When using @agoric/react-components, the makeOffer function from useAgoric() will show a dialog when the user doesn't have a smart wallet provisioned. If the user clicks proceed in the dialog, the offer will be executed. However, if the user dismisses the dialog, the status update callback never gets invoked, so the caller has no way of knowing that the offer was aborted. It should send an error status update in this case. This will allow the app to show a loading indicator or something like that, and stop showing it if the dialog is dismissed rather than the user clicking "proceed".