feat: fold purchase and promo voucher fields into one code field

tests/Service/BookingEditPreFlightCheckerTest.php

@@ -15,12 +15,8 @@ use App\Form\Model\BookingDto;
 use App\Form\Model\ParticipantDto;
 use App\Form\Service\ServiceAgeEvaluator;
 use App\Service\BookingEditPreFlightChecker;
-use App\Service\BookingPriceCalculator;
 use App\Service\ParticipantEligibilityChecker;
-use App\Service\VoucherValidator;
 use App\Validator\Constraints\MandatoryAdditionalServicesSelectedValidator;
-use App\Validator\Constraints\PromoVoucherValidator;
-use App\Validator\Constraints\PurchaseVoucherValidator;
 use App\Validator\Constraints\SkiPassSelectionValidator;
 use Carbon\CarbonImmutable;
 use PHPUnit\Framework\TestCase;
@@ -248,17 +244,13 @@ class BookingEditPreFlightCheckerTest extends TestCase
 
     private function createValidator(): ValidatorInterface
     {
-        $voucherValidator = $this->createStub(VoucherValidator::class);
-        $bookingPriceCalculator = $this->createStub(BookingPriceCalculator::class);
         $participantEligibilityChecker = $this->createStub(ParticipantEligibilityChecker::class);
         $participantEligibilityChecker
             ->method('isParticipantEligible')
             ->willReturn(false);
 
-        $validatorFactory = new class($voucherValidator, $bookingPriceCalculator, $participantEligibilityChecker, new ServiceAgeEvaluator()) implements ConstraintValidatorFactoryInterface {
+        $validatorFactory = new class($participantEligibilityChecker, new ServiceAgeEvaluator()) implements ConstraintValidatorFactoryInterface {
             public function __construct(
-                private readonly VoucherValidator $voucherValidator,
-                private readonly BookingPriceCalculator $bookingPriceCalculator,
                 private readonly ParticipantEligibilityChecker $participantEligibilityChecker,
                 private readonly ServiceAgeEvaluator $serviceAgeEvaluator,
             ) {
@@ -272,14 +264,6 @@ class BookingEditPreFlightCheckerTest extends TestCase
                     return new EmailValidator(Email::VALIDATION_MODE_HTML5);
                 }
 
-                if (PurchaseVoucherValidator::class === $className) {
-                    return new PurchaseVoucherValidator($this->voucherValidator);
-                }
-
-                if (PromoVoucherValidator::class === $className) {
-                    return new PromoVoucherValidator($this->voucherValidator, $this->bookingPriceCalculator);
-                }
-
                 if (MandatoryAdditionalServicesSelectedValidator::class === $className) {
                     return new MandatoryAdditionalServicesSelectedValidator(
                         $this->participantEligibilityChecker,