feat: unique email addresses of participants unless child, cleanup

addresses #869axbn21

src/Form/Service/Condition/RoomSelectionCondition.php

@@ -35,7 +35,7 @@ class RoomSelectionCondition implements FieldConditionInterface
      * Checks both submitted form data and participant DTO data to determine
      * if the selected room matches any of the configured room codes.
      *
-     * @param BookingDto  $bookingDto       The current booking data (create or edit)
+     * @param BookingDto           $bookingDto       The current booking data (create or edit)
      * @param int                  $participantIndex The index of the participant being evaluated
      * @param array<string, mixed> $formData         Current form data for condition evaluation
      *
@@ -94,7 +94,7 @@ class RoomSelectionCondition implements FieldConditionInterface
     /**
      * Finds a room by ID in the available travel rooms.
      *
-     * @param int                 $roomId     The room ID to find
+     * @param int        $roomId     The room ID to find
      * @param BookingDto $bookingDto The booking DTO containing travel data
      *
      * @return Room|null The found room or null if not found