I want to extend the search criteria in ProductSearchCriteriaEvent to include additional products (e.g., by ID or category) while preserving the existing search behavior (e.g., matching a user’s search term). The products are reachable but are not appearing in the storefront search results when the following subscriber is enabled.

Here's the code example to include two additional products by its its product numbers, but it is not working - blank search results

class ProductSearchSubscriber implements EventSubscriberInterface
{
  public static function getSubscribedEvents(): array
  {
    return [
      ProductSearchCriteriaEvent::class => 'extendSearchCriteria',
    ];
  }
  public function extendSearchCriteria(ProductSearchCriteriaEvent $event): void
  {
    $criteria = $event->getCriteria();
    $criteria->addFilter(new OrFilter([
      new EqualsFilter('productNumber', 'SW000001'),
      new EqualsFilter('productNumber', 'SW000002'),
    ]));
  }
}