Merge branch 'id-fix-duo-page-on-staging-ref' into 'master'

Fix Gitlab Duo page 404 error on Staging Ref

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182949



Merged-by: Igor Drozdov <idrozdov@gitlab.com>
Approved-by: Keeyan Nejad <knejad@gitlab.com>
Approved-by: Nikola Milojevic <nmilojevic@gitlab.com>

ee/app/controllers/admin/gitlab_duo_controller.rb

@@ -21,7 +21,7 @@ def show; end
     private
 
     def ensure_feature_available!
-      render_404 if Gitlab.com? # rubocop:disable Gitlab/AvoidGitlabInstanceChecks -- Not related to SaaS offerings
+      render_404 if gitlab_com_subscription?
       render_404 unless License.current&.paid?
     end
   end

ee/spec/requests/admin/gitlab_duo_controller_spec.rb

@@ -95,7 +95,7 @@
 
       context 'when instance is on GitLab.com' do
         before do
-          allow(Gitlab).to receive(:com?).and_return(true)
+          stub_saas_features(gitlab_com_subscriptions: true)
         end
 
         it_behaves_like 'hides gitlab duo path'