Changed `SendReminderEmails`, `UseAccessCode`, and `TfaEnabled` properties from non-nullable `bool` to nullable `bool?` to allow representation of `null` values. Added conditional initialization of `TfaEnabled` to `false` for `NETFRAMEWORK` target.
Changed `SendReminderEmails`, `UseAccessCode`, and `TfaEnabled` properties from non-nullable `bool` to nullable `bool?` to allow representation of `null` values. Added conditional initialization of `TfaEnabled` to `false` for `NETFRAMEWORK` target.