chore: fix phpstan errors

src/Service/BookingEditDraftManager.php

@@ -178,6 +178,7 @@ class BookingEditDraftManager
     /**
      * Applies bank account data from draft to BookingDto.
      */
+    /** @param array<string, mixed> $bankAccountData */
     private function applyBankAccountData(BookingDto $dto, array $bankAccountData): void
     {
         $iban = $bankAccountData['iban'] ?? null;