fix in_batches cursor for uuidv4 primary keys

Author: ezekg

lib/denormalizable.rb

@@ -470,13 +470,7 @@ def denormalize_association_async(record, relation)
       #           UUIDv4, cursor on insertion order when possible so that
       #           records inserted mid-enumeration land ahead of the cursor
       #           instead of being skipped behind it
-      cursor = if relation.klass.column_names.include?('created_at')
-                 %w[created_at id]
-               else
-                 relation.klass.primary_key
-               end
-
-      relation.in_batches(of: DENORMALIZE_ASSOCIATION_ASYNC_BATCH_SIZE, cursor:) do |batch|
+      relation.in_batches(of: DENORMALIZE_ASSOCIATION_ASYNC_BATCH_SIZE, cursor: %i[created_at id]) do |batch|
         DenormalizeAssociationAsyncJob.perform_later(
           source_class_name: record.class.name,
           source_id: record.id,