refactor member_presenter_factory_spec to use Valkyrie for setup

spec/presenters/hyrax/member_presenter_factory_spec.rb

@@ -18,15 +18,16 @@
     end
 
     it 'builds presenters for the object ids passed in' do
-      ids = FactoryBot.create_list(:work, 2).map(&:id)
+      ids = [FactoryBot.valkyrie_create(:hyrax_work).id,
+             FactoryBot.valkyrie_create(:hyrax_work).id]
 
       expect(factory.member_presenters(ids))
         .to contain_exactly(*ids.map { |id| have_attributes(id: id) })
     end
 
     context 'with members' do
-      let(:work) { FactoryBot.create(:work_with_file_and_work) }
-      let(:attributes) { work.to_solr }
+      let(:work) { FactoryBot.valkyrie_create(:hyrax_work, :with_member_works_and_file_sets) }
+      let(:attributes) { Hyrax::ValkyrieIndexer.for(resource: work).to_solr }
 
       it 'builds presenters for the memebers' do
         expect(factory.member_presenters)