error from useCkoCart not exported in useCko

[CheStas]

an error that is set in useCkoCart.ts

checkout-com/src/useCkoCard.ts

Line 119 in fbf0965

error.value = e;

is not exported in useCko.ts

checkout-com/src/useCko.ts

Line 42 in fbf0965

error: cardError,

it means that it's not possible to check and read an error if any happens in this method.

the error should be assigner to useCko-error

checkout-com/src/useCko.ts

Line 33 in fbf0965

const error = sharedRef(null, 'useCko-error');

[Fifciu]

Please also update an unit test in new PR