Merge branch 'ps-fix-new-dropdown-with-no-items' into 'master'

Fix new dropdown showing on mobile with no items

See merge request gitlab-org/gitlab!64268

app/helpers/nav/top_nav_helper.rb

@@ -22,7 +22,7 @@ def top_nav_responsive_view_model(project:, group:)
       new_view_model = new_dropdown_view_model(project: project, group: group)
-      if new_view_model
+      if new_view_model && new_view_model.fetch(:menu_sections)&.any?
         builder.add_view(NEW_VIEW, new_view_model)
       end

spec/helpers/nav/top_nav_helper_spec.rb

@@ -539,10 +539,18 @@
     end
     context 'with new' do
-      let(:with_new_view_model) { { id: 'test-new-view-model' } }
+      let(:with_new_view_model) { { menu_sections: [{ id: 'test-new-view-model' }] } }
       it 'has new subview' do
-        expect(subject[:views][:new]).to eq({ id: 'test-new-view-model' })
+        expect(subject[:views][:new]).to eq(with_new_view_model)
+      end
+    end
+
+    context 'with new and no menu_sections' do
+      let(:with_new_view_model) { { menu_sections: [] } }
+
+      it 'has new subview' do
+        expect(subject[:views][:new]).to be_nil
       end
     end
   end