feat: extract booking session handling

src/Controller/Booking/Create/Step4Controller.php

@@ -16,6 +16,7 @@ use App\Htmx\HxTrait;
 use App\Entity\User;
 use App\Service\BookingPriceCalculatorService;
 use App\Service\BookingService;
+use App\Service\BookingSessionService;
 use App\Service\BookingSummaryDataService;
 use App\Service\Newsletter\MailjetNewsletterService;
 use App\Service\Newsletter\NewsletterDoubleOptInService;
@@ -38,6 +39,7 @@ class Step4Controller extends AbstractController
 
     public function __construct(
         private readonly BookingService $bookingService,
+        private readonly BookingSessionService $bookingSessionService,
         private readonly BookingSummaryDataService $summaryDataService,
         private readonly BookingPriceCalculatorService $priceCalculator,
         private readonly ApiClient $apiClient,
@@ -54,7 +56,7 @@ class Step4Controller extends AbstractController
     #[Route('/bookings/create/confirmation', name: 'app_booking_create_step_4')]
     public function index(Request $request): Response
     {
-        $result = $this->getOrCreateBookingCreateDto($this->bookingService, $request);
+        $result = $this->getOrCreateBookingCreateDto($this->bookingSessionService, $request);
         if ($result instanceof Response) {
             return $result;
         }
@@ -137,7 +139,7 @@ class Step4Controller extends AbstractController
                 $this->addFlash('booking_total', $summaryData->payableAmount);
                 $this->addFlash('booking_travel_name', $bookingCreateDto->travel->label);
                 $this->clearTravelDataCache($bookingCreateDto);
-                $this->bookingService->clearBookingDto($request, BookingDto::MODE_CREATE);
+                $this->bookingSessionService->clearBookingDto($request, BookingDto::MODE_CREATE);
 
                 $this->logger->info('Booking successfully created.', [
                     'date_id' => $bookingCreateDto->travel->id,