chore: [IOBP-1141] Added psp_selected mixpanel property for the pay…

…ment flow (#6616)

## Short description
This PR adds the `psp_selected` mixpanel property to the outcome errors
page if present.

## List of changes proposed in this pull request
- Mapped the `psp_selected` property to the mixpanel event when occurs
an outcome error.

ts/features/payments/checkout/analytics/index.ts

@@ -27,6 +27,7 @@ export type PaymentAnalyticsProps = {
   payment_method_selected_flag: PaymentAnalyticsSelectedMethodFlag;
   preselected_psp_flag: PaymentAnalyticsPreselectedPspFlag;
   selected_psp_flag: PaymentAnalyticsSelectedPspFlag;
+  psp_selected: string;
   editing: PaymentAnalyticsEditingType;
 };
 

ts/features/payments/checkout/screens/WalletPaymentOutcomeScreen.tsx

@@ -277,6 +277,7 @@ const WalletPaymentOutcomeScreen = () => {
       service_name: paymentAnalyticsData?.serviceName,
       attempt: paymentOngoingHistory?.attempt,
       expiration_date: paymentAnalyticsData?.verifiedData?.dueDate,
+      psp_selected: paymentAnalyticsData?.selectedPsp,
       payment_phase:
         outcome === WalletPaymentOutcomeEnum.GENERIC_ERROR
           ? getPaymentPhaseFromStep(currentStep)