Include MFA enrollment details in bulk user export

Authentication method details are currently not included for users in bulk user export.

This would be useful from a compliance standpoint eg. we need to see which users are registered with phone numbers outside our country of operation. Currently we have to do bulk user export, filter out SMS users then call the GET /api/v2/users/{user-id}/authentication-methods on every user in order to attach the phone number. This overall is a slow and cumbersome process, it would be optimal if MFA enrollment details were included in the bulk user export job.