Merge branch '371635-global-search-api-should-respect-feature-flag' into 'master'

Advanced Search: global searches via API are not restricted

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/108394



Merged-by: Terri Chu <tchu@gitlab.com>
Approved-by: Terri Chu <tchu@gitlab.com>
Reviewed-by: Peter Leitzen <pleitzen@gitlab.com>
Reviewed-by: Terri Chu <tchu@gitlab.com>
Co-authored-by: rkumar555 <rkumar@gitlab.com>