* fix arguments
* only set payment status to pristine if it isn’t already successful
* add server side handling for saved tokens
* ensure correct gateway is selected when using saved card:
- reset the active payment method when user selects saved payment method
(card); this ensures that the correct gateway is used when switching
from another gateway to a saved card
* enhance radiocontrol to receive option specific change events.
* implement specific option change events
This commit:
- ensures selecting a saved payment option updates active payment method for the selected option.
- Sets the saved token key for the selected option correctly.
* remove unnecessary php side code
* fix bug with default saved payment option not applying:
When the payment options are initialised, we now call the onChange
handler for the default (`is_default`) option. This triggers payment
success() so checkout succeeds with default payment method, even if user
doesn't touch payment options.
* fix effect dependencies
Co-authored-by: Rua Haszard <rua.haszard@automattic.com>
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