automatically use email address as 2fa provider (#4317)

.env.template

@@ -444,6 +444,11 @@
 ##
 ## Maximum attempts before an email token is reset and a new email will need to be sent.
 # EMAIL_ATTEMPTS_LIMIT=3
+##
+## Setup email 2FA regardless of any organization policy
+# EMAIL_2FA_ENFORCE_ON_VERIFIED_INVITE=false
+## Automatically setup email 2FA as fallback provider when needed
+# EMAIL_2FA_AUTO_FALLBACK=false
 
 ## Other MFA/2FA settings
 ## Disable 2FA remember