fix: ensure validation of participant data

src/Form/Model/ParticipantDto.php

@@ -11,6 +11,7 @@ use App\Validator\Constraints as AppAssert;
 use Symfony\Component\Validator\Constraints as Assert;
 
 #[AppAssert\Participant(groups: ['booking_edit', 'booking_create'])]
+#[AppAssert\Booking(groups: ['booking_edit', 'booking_create'])]
 class ParticipantDto
 {
     /**