Merge branch 'update-admin-organization-selector-graphql-query' into 'master'

Use organizations query for admin area selector

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/169336



Merged-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Approved-by: Jack Chapman <jachapman@gitlab.com>
Approved-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Approved-by: Mike Nichols <mnichols@gitlab.com>
Reviewed-by: Justin Ho Tuan Duong <hduong@gitlab.com>
Co-authored-by: Peter Hegman <phegman@gitlab.com>