[v25] Adds async APIs to STPApplePayContext, ApplePayConfiguration

[yuki-stripe]

Do not merge

Motivation

iOS v25: https://docs.google.com/document/d/1v0PsR1lOExCtjL7hhonaUyTBEMWjLgETCF_TdNIUtTo/edit?tab=t.0#heading=h.rvjso1qjez64
API Review: https://docs.google.com/document/d/1_McNEkaB4HvXnl0eksjdgzcszUjK3y1Tsh-A8s_Rey0/edit?tab=t.0#heading=h.xrbraa9bs4k1

Testing

See tests

Changelog

See changelog & migrating

[github-actions]

⚠️ Public API changes detected:

StripePaymentSheet

- public let authorizationResultHandler: ((PassKit.PKPaymentAuthorizationResult, @escaping ((PassKit.PKPaymentAuthorizationResult) -> Swift.Void)) -> Swift.Void)?
- public init(paymentRequestHandler: ((PassKit.PKPaymentRequest) -> PassKit.PKPaymentRequest)? = nil, authorizationResultHandler: ((PassKit.PKPaymentAuthorizationResult, @escaping ((PassKit.PKPaymentAuthorizationResult) -> Swift.Void)) -> Swift.Void)? = nil)
- public let authorizationResultHandler: StripePaymentSheet.PaymentSheet.ApplePayConfiguration.Handlers.AuthorizationResultHandler?
+ #if compiler(>=5.3) && $AsyncAwait
- public typealias AuthorizationResultHandler = (_ result: PassKit.PKPaymentAuthorizationResult) async -> PassKit.PKPaymentAuthorizationResult
+ #endif
+ #if compiler(>=5.3) && $AsyncAwait
- public init(paymentRequestHandler: ((PassKit.PKPaymentRequest) -> PassKit.PKPaymentRequest)? = nil, authorizationResultHandler: StripePaymentSheet.PaymentSheet.ApplePayConfiguration.Handlers.AuthorizationResultHandler? = nil)
+ #endif

StripeApplePay

- func applePayContext(_ context: StripeApplePay.STPApplePayContext, didCreatePaymentMethod paymentMethod: StripeCore.StripeAPI.PaymentMethod, paymentInformation: PassKit.PKPayment, completion: @escaping StripeApplePay.STPIntentClientSecretCompletionBlock)
+ #if compiler(>=5.3) && $AsyncAwait
+ func applePayContext(_ context: StripeApplePay.STPApplePayContext, didCreatePaymentMethod paymentMethod: StripeCore.StripeAPI.PaymentMethod, paymentInformation: PassKit.PKPayment) async throws -> Swift.String
+ #endif

If you are adding a new public API consider the following:

• Do these APIs need to be public or can they be protected with @_spi(STP)?
• If these APIs need to be public, assess whether they require an API review.

If you are modifying or removing a public API:

• Does this require a breaking version change?
• Do these changes require API review?

If you confirm these APIs need to be added/updated and have undergone necessary review, add the label modifies public API to this PR to acknowledge and bypass this check.

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