ACAS SAML fails against Azure AD

[brianbolt]

ACAS login fails if user already authenticated against AD with:

AADSTS75011: Authentication method 'Windowslntegrated' by which the user
authenticated with the service doesn't match requested authentication method
"Password, ProtectedTransport'. Contact the ACASDev application owner.

The is this:
https://docs.microsoft.com/en-us/troubleshoot/azure/active-directory/error-code-aadsts75011-auth-method-mismatch

The fix is to use the option: disableRequestedAuthnContext: true

disableRequestedAuthnContext: if truthy, do not request a specific authentication context. This is known to help when authenticating against Active Directory (AD FS) servers.

https://github.com/node-saml/passport-saml