title: Keycloak required action check in authentiation flow
body: <p>Is it possible to <strong>trigger</strong> the executions of all <strong>required actions</strong> for a user <strong>in an authentication execution</strong> (Without finished flow)?</p>
  
  <p>I'm writing a custom login where a user can <strong>login as another user</strong> under specific circumstances. At first the user will be authenticated with the Username Password execution. After this step, the user may choose multiple tenant user via a custom implemented Authenticator. This tenant user is simply set to the context. <strong>- works fine</strong> </p>
  
  <p>But if I need required actions on the original user, only the required actions of the tenant user will checked after the authentication flow. I want to do that <strong>check in the middle of my authentication flow with the required actions of my original user</strong>. (e.g. I want the user to enter the password of update password required action or confirm the terms and conditions action)</p>
  
  <p>Is there e.g. any Service for triggering the check of required Actions just like after the authentication flow?</p>
  
  <p>I tried  AuthenticationManager.actionRequired(...), but apparently isn't the correct way to use in an authentication execution step.</p>