Activate correct nav item for Admin::LicensesController

With the removal of the old license page, the remaining actions have to
activate the correct nav item.

Changelog: fixed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/66051
EE: true

ee/app/views/layouts/nav/sidebar/_licenses_link.html.haml

-= nav_link(controller: 'admin/subscriptions') do
+= nav_link(controller: ['admin/subscriptions', 'admin/licenses']) do
   = link_to admin_subscription_path, class: "qa-link-subscription-menu" do
     .nav-icon-container
       = sprite_icon('license')
     %span.nav-item-name
       = _('Subscription')
   %ul.sidebar-sub-level-items.is-fly-out-only
-    = nav_link(controller: controller, html_options: { class: "fly-out-top-item" } ) do
+    = nav_link(controller: ['admin/subscriptions', 'admin/licenses'], html_options: { class: "fly-out-top-item" } ) do
       = link_to admin_subscription_path do
         %strong.fly-out-top-item-name
           = _('Subscription')

ee/spec/features/admin/licenses/admin_uploads_license_spec.rb

@@ -43,12 +43,20 @@ RSpec.describe "Admin uploads license", :js do
       File.write(path, license.export)
     end
 
+    shared_examples 'active navigation item' do
+      it 'activates the "Subscription" navigation item' do
+        expect(find('.sidebar-top-level-items > li.active')).to have_content('Subscription')
+      end
+    end
+
     context "when license is valid" do
       let_it_be(:path) { Rails.root.join("tmp/valid_license.gitlab-license") }
 
       context "when license is active immediately" do
         let_it_be(:license) { build(:gitlab_license) }
 
+        it_behaves_like 'active navigation item'
+
         it "uploads license" do
           attach_and_upload(path)
 
@@ -61,6 +69,8 @@ RSpec.describe "Admin uploads license", :js do
         let_it_be(:license) { build(:gitlab_license, starts_at: Date.current + 1.month) }
 
         context "when a current license exists" do
+          it_behaves_like 'active navigation item'
+
           it "uploads license" do
             attach_and_upload(path)
 
@@ -74,6 +84,8 @@ RSpec.describe "Admin uploads license", :js do
             allow(License).to receive(:current).and_return(nil)
           end
 
+          it_behaves_like 'active navigation item'
+
           it "uploads license" do
             attach_and_upload(path)
 
@@ -87,6 +99,8 @@ RSpec.describe "Admin uploads license", :js do
       let_it_be(:license) { build(:gitlab_license, expires_at: Date.yesterday) }
       let_it_be(:path) { Rails.root.join("tmp/invalid_license.gitlab-license") }
 
+      it_behaves_like 'active navigation item'
+
       it "doesn't upload license" do
         attach_and_upload(path)