Issue #3262451 by jsacksick: Symfony event class aliasing is no longer necessary.

namespace Drupal\commerce;

// Drupal\Component\EventDispatcher\Event was introduced in Drupal core 9.1 to

// assist with deprecations and the transition to Symfony 5.

// @todo Remove this when core 9.1 is the lowest supported version.

// @see https://www.drupal.org/project/commerce/issues/3192056

if (!class_exists('Drupal\Component\EventDispatcher\Event')) {

  class_alias('Symfony\Component\EventDispatcher\Event', 'Drupal\Component\EventDispatcher\Event');

}

use Drupal\Component\EventDispatcher\Event;

/**