Added fingerprint check validation for card and us bank

CHANGELOG.md

@@ -7,7 +7,7 @@
 * [Fixed] Fixed an animation glitch when dismissing PaymentSheet in React Native.
 * [Fixed] Fixed an issue with FlowController in vertical layout where the payment method could incorrectly be preserved across a call to `update` when it's no longer valid.
 * [Fixed] Fixed a potential deadlock when `paymentOption` is accessed from Swift concurrency.
-
+* [Added] Added a check to `PaymentSheetDeferredValidator.validatePaymentMethod` for mismatched card or US bank account fingerprints
 
 ## 23.32.0 2024-10-21
 ### PaymentSheet

StripePaymentSheet/StripePaymentSheet/Source/PaymentSheet/PaymentSheetDeferredValidator.swift

@@ -55,11 +55,11 @@ struct PaymentSheetDeferredValidator {
         guard intentPaymentMethod.stripeId == paymentMethod.stripeId else {
             if intentPaymentMethod.type == paymentMethod.type {
                 // Payment methods of type card and us_bank_account can be cloned, leading to mismatched pm ids, but their fingerprints should still match
-                switch paymentMethod.type.identifier {
-                case "card":
+                switch paymentMethod.type {
+                case .card:
                     try validateFingerprint(intentFingerprint: intentPaymentMethod.card?.fingerprint, fingerprint: paymentMethod.card?.fingerprint)
                     return
-                case "us_bank_account":
+                case .USBankAccount:
                     try validateFingerprint(intentFingerprint: intentPaymentMethod.usBankAccount?.fingerprint, fingerprint: paymentMethod.usBankAccount?.fingerprint)
                     return
                 default: