wip: booking process, refactor participant room assignment logic

src/Controller/Booking/CreateStep2Controller.php

@@ -69,7 +69,8 @@ class CreateStep2Controller extends AbstractController
     }
 
     /**
-     * Handles HTMX requests for dynamic form updates when room selections change.
+     * Handles HTMX requests for dynamic form updates when room selections change by submitting the form
+     * without validation and returning a freshly rendered instance.
      */
     #[Route('/bookings/create/participants/refresh', name: 'app_booking_create_step_2_refresh', methods: ['POST'])]
     public function refreshParticipantForm(Request $request): Response
@@ -84,8 +85,6 @@ class CreateStep2Controller extends AbstractController
 
         $form->handleRequest($request);
 
-        $this->bookingService->saveBookingCreateDto($request, $bookingCreateDto);
-
         return $this->renderBlock('booking/create_step_2.html.twig', 'participants_form', [
             'form' => $form->createView(),
         ]);