Fix factory default for pages_access_level

Pages access level currently depends on project visibilty
which is ignored by factory, this commit fixes that

spec/factories/projects.rb

@@ -25,7 +25,9 @@ FactoryBot.define do
       issues_access_level ProjectFeature::ENABLED
       merge_requests_access_level ProjectFeature::ENABLED
       repository_access_level ProjectFeature::ENABLED
-      pages_access_level ProjectFeature::ENABLED
+      pages_access_level do
+        visibility_level == Gitlab::VisibilityLevel::PUBLIC ? ProjectFeature::ENABLED : ProjectFeature::PRIVATE
+      end
 
       # we can't assign the delegated `#ci_cd_settings` attributes directly, as the
       # `#ci_cd_settings` relation needs to be created first

spec/services/projects/update_service_spec.rb

@@ -347,13 +347,13 @@ describe Projects::UpdateService do
 
     context 'when updating #pages_access_level' do
       subject(:call_service) do
-        update_project(project, admin, project_feature_attributes: { pages_access_level: ProjectFeature::PRIVATE })
+        update_project(project, admin, project_feature_attributes: { pages_access_level: ProjectFeature::ENABLED })
       end
 
       it 'updates the attribute' do
         expect { call_service }
           .to change { project.project_feature.pages_access_level }
-          .to(ProjectFeature::PRIVATE)
+          .to(ProjectFeature::ENABLED)
       end
 
       it 'calls Projects::UpdatePagesConfigurationService' do