Enable aborting SMS 2FA setup

[melegiul]

When a user enters a phone number and clicks on next, the phone number must be confirmed by entering the SMS code. Until the right SMS code is submitted, a new required action "Set phone number" is added to the user, even if other 2FA methods are configured.

This makes it hard for the user to abort the setup. The only way currently is to successfully setup SMS 2FA.

[alexanderhofstaetter]

This would be great to solve. This is also a problem because the SMS form cannot be aborted with a "back to login button"

[svenseeberg]

If the action is aborted and the enforce-mfa plugin is active, it would be very good to redirect the user immediately to the MFA method selection screen after aborting the confirmation action.

[Mizar01]

Anyone found a solution on this problem?