Make sure Delete reaches collection owner (#38399)

spec/services/revoke_collection_item_service_spec.rb

@@ -13,12 +13,14 @@ RSpec.describe RevokeCollectionItemService do
   end
 
   context 'when the collection is remote', feature: :collections_federation do
-    let(:collection) { Fabricate(:remote_collection) }
+    let(:account) { Fabricate(:remote_account, inbox_url: 'https://example.com/actor/1/inbox') }
+    let(:collection) { Fabricate(:remote_collection, account:) }
     let(:collection_item) { Fabricate(:collection_item, collection:, uri: 'https://example.com') }
 
     it 'federates a `Delete` activity' do
       subject.call(collection_item)
 
+      expect(ActivityPub::DeliveryWorker).to have_enqueued_sidekiq_job.with(instance_of(String), collection_item.account_id, 'https://example.com/actor/1/inbox')
       expect(ActivityPub::AccountRawDistributionWorker).to have_enqueued_sidekiq_job
     end
   end