fix: enable bookings without ski passes

src/Form/Model/ParticipantDto.php

@@ -102,8 +102,8 @@ class ParticipantDto
     /** @var list<int> */
     public array $autoBookOptOutRentalIds = [];
 
-    // Note: Ski pass validation is conditional - see ParticipantEditDto::validateSkiPassRequired()
-    // Babies (0-2 years) are exempt from ski pass requirement
+    // Note: Ski pass validation is conditional - see App\Validator\Constraints\SkiPassSelectionValidator.
+    // Babies (0-2 years) and travels that offer no ski passes at all are exempt.
     public ?Service $skiPass = null;
 
     /** @var list<Service> */