PR Summary

• Restructured conditions in CheckoutableListener.php
  This update brings a modification to the CheckoutableListener.php file where a condition to verify the type of $event->checkedOutTo has been added. This means the system now checks if the checked-out item is related to a user. If it's not, it stops further calculations and returns a null value, hence increasing overall system efficiency.
• Repositioned Item Acceptance Requirement Check
  The check to determine if a checked-out item requires acceptance ($event->checkoutable->requireAcceptance()) has been moved. This change enhances the system's logical order and might improve our application's performance.