Merge branch '423525-group-wikis-visibility-bug' into 'master'

As an anonymous or non group member, group wikis are not searchable

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/134978



Merged-by: Dmitry Gruzd <dgruzd@gitlab.com>
Approved-by: Dmitry Gruzd <dgruzd@gitlab.com>
Reviewed-by: Dmitry Gruzd <dgruzd@gitlab.com>
Reviewed-by: Terri Chu <tchu@gitlab.com>
Co-authored-by: rkumar555 <rkumar@gitlab.com>