enrollPhone method
Enrolls a new phone (SMS or Voice) factor for the given phoneNumber.
Returns an MfaEnrollmentChallenge containing the oobCode used to
complete verification via verifyOob once the user receives the code.
Implementation
Future<MfaEnrollmentChallenge> enrollPhone({
required final String phoneNumber,
final PhoneType type = PhoneType.sms,
}) =>
Auth0FlutterWebPlatform.instance
.mfaEnrollPhone(_mfaToken, phoneNumber, type);