AuthenticatedReactiveAuthorizationManager support for AnonymousAuthenticationToken

[rwinch]

Summary

AuthenticatedReactiveAuthorizationManager should filter out anonymous authentication by leveraging AuthenticationTrustResolver.

[mibo]

Hi @rwinch I would like to take this one.

[rwinch]

@mibo Thanks for you volunteering! The issue is yours :) Let me know if you need any help.

[mibo]

@rwinch I checked #6198 and created following PR: #6267

Can you please check if this solution fit and give feedback. Thanks.