feat: improved mutability checks for personal data in edit or create mode

src/Form/Model/ParticipantEditDto.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Form\Model;
 
+use App\Validator\Constraints as AppAssert;
 use Symfony\Component\Validator\Constraints as Assert;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
 
@@ -15,6 +16,7 @@ use Symfony\Component\Validator\Context\ExecutionContextInterface;
  * the participant being edited and the full booking context needed for
  * cross-participant validation.
  */
+#[AppAssert\Booking(groups: ['booking_edit', 'booking_create'])]
 class ParticipantEditDto
 {
     public function __construct(