fix: don't require email address from participants under 16

src/Form/Service/CreateFieldStateProvider.php

@@ -20,6 +20,7 @@ use App\Form\Service\Condition\FirstParticipantReadOnlyCondition;
 use App\Form\Service\Condition\MultipleParticipantsCondition;
 use App\Form\Service\Condition\RentalInsuranceAvailableCondition;
 use App\Form\Service\Condition\RentalSelectionCondition;
+use App\Form\Service\Condition\RequiresOwnEmailCondition;
 use App\Form\Service\Condition\RoomSelectionCondition;
 use App\Form\Service\Condition\ServiceSubTypeCondition;
 use App\Form\Service\Condition\SingleRoomTypeCondition;
@@ -113,6 +114,7 @@ class CreateFieldStateProvider extends AbstractFieldStateProvider
 
         $this->fieldStateConditions['email'] = [
             'static_text' => $firstParticipantReadOnlyCondition,
+            'required' => new RequiresOwnEmailCondition(),
         ];
 
         // Mobile field: static text for first participant (when read-only), required for first participant (guest bookings)