Merge branch '472011-cache-project-authorizations' into 'master'

Cache user project authorizations for faster autocomplete and search

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/169630



Merged-by: Dmitry Gruzd <dgruzd@gitlab.com>
Approved-by: Dmitry Gruzd <dgruzd@gitlab.com>
Co-authored-by: maddievn <mvanniekerk@gitlab.com>