SPNEGO and _eventId_authn/SPNEGO button

[Cantor, Scott]

> I'll report back with if and how I solved it via the MFA flow.

The material difference is that you can't just signal authn/SPNEGO, you need to signal your own custom event that you define (as documented) and then you create a rule exiting that event that sends it to authn/SPNEGO, so there's an indirection involved.

Otherwise it's not that hard to do simple "do X, or signal to do Y with a button" scenarios.

-- Scott