fix: clear target path when canceling booking flow

src/Controller/Booking/Create/IndexController.php

@@ -116,6 +116,10 @@ class IndexController extends AbstractController
         // Clear the booking session
         $this->bookingService->clearBookingSession($request);
 
+        // Clear the security target path to prevent redirect loop after login
+        // Without this, logging in after cancel would redirect back to a stale booking URL
+        $request->getSession()->remove('_security.main.target_path');
+
         // Add a flash message to inform the user
         $this->addFlash('info', 'Buchung abgebrochen.');