Rename EE::ApplicationRecord to EE::ApplicationRecordHelpers

Issue https://gitlab.com/gitlab-org/gitlab/-/issues/322133

app/models/application_record.rb

@@ -80,4 +80,4 @@ class ApplicationRecord < ActiveRecord::Base
   end
 end
 
-ApplicationRecord.prepend_if_ee('EE::ApplicationRecord')
+ApplicationRecord.prepend_if_ee('EE::ApplicationRecordHelpers')

ee/app/models/ee/application_record.rb → ee/app/models/ee/application_record_helpers.rb

 # frozen_string_literal: true
 
 module EE
-  module ApplicationRecord
+  # Intentionally pick a different name, to prevent naming conflicts
+  module ApplicationRecordHelpers
     extend ActiveSupport::Concern
 
     class_methods do