Subscription expiration banner for top-level group owners only

instead of all owners of the current namespace.

Related to https://gitlab.com/gitlab-org/gitlab/-/issues/295308.

ee/app/helpers/ee/subscribable_banner_helper.rb

@@ -51,7 +51,7 @@ module EE
       ::Gitlab::ExpiringSubscriptionMessage.new(
         subscribable: decorated_subscription,
         signed_in: signed_in?,
-        is_admin: can?(current_user, :owner_access, entity),
+        is_admin: can?(current_user, :owner_access, entity.root_ancestor),
         namespace: current_namespace
       ).message
     end

ee/changelogs/unreleased/295308-subscription-banner-owners-only.yml

+---
+title: Show subscription expiration banner only for top-level group owners
+merge_request: 54908
+author:
+type: changed

ee/spec/helpers/ee/subscribable_banner_helper_spec.rb

@@ -122,7 +122,7 @@ RSpec.describe EE::SubscribableBannerHelper do
             it 'calls Gitlab::ExpiringSubscriptionMessage and SubscriptionPresenter if is Gitlab.com?' do
               allow(helper).to receive(:signed_in?).and_return(true)
               allow(helper).to receive(:current_user).and_return(user)
-              allow(helper).to receive(:can?).with(user, :owner_access, entity).and_return(true)
+              allow(helper).to receive(:can?).with(user, :owner_access, root_namespace).and_return(true)
 
               expect(SubscriptionPresenter).to receive(:new).with(gitlab_subscription).and_return(decorated_mock)
               expect(::Gitlab::ExpiringSubscriptionMessage).to receive(:new).with(
@@ -137,9 +137,11 @@ RSpec.describe EE::SubscribableBannerHelper do
             end
           end
 
+          let(:root_namespace) { create(:group_with_plan) }
+          let(:namespace) { create(:group, :nested, parent: root_namespace) }
+
           context 'when a project is present' do
             let(:entity) { create(:project, namespace: namespace) }
-            let(:namespace) { create(:namespace_with_plan) }
 
             before do
               assign(:project, entity)
@@ -149,8 +151,7 @@ RSpec.describe EE::SubscribableBannerHelper do
           end
 
           context 'when a group is present' do
-            let(:entity) { create(:group_with_plan) }
-            let(:namespace) { entity }
+            let(:entity) { namespace }
 
             before do
               assign(:project, nil)