Merge branch 'id-allow-to-use-for-duo-chat' into 'master'

Use allowed_to_use? method for duo chat policy check

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183843



Merged-by: Igor Drozdov <idrozdov@gitlab.com>
Approved-by: Tetiana Chupryna <tchupryna@gitlab.com>
Approved-by: Alejandro Rodríguez <alejandro@gitlab.com>
Approved-by: Jarka Košanová <jarka@gitlab.com>