function decryptAttendeeFields decryptAttendeeFields(row: Attendee,privateKey: CryptoKey,paidEvent?: boolean): Promise<Attendee> Decrypt attendee fields from the PII blob. Requires migration to be complete (admin is gated behind migration). When paidEvent is false, payment_id and refunded are skipped. Parameters row: Attendee privateKey: CryptoKey optional paidEvent: boolean = true Return Type Promise<Attendee>