menu: make back btn navigate to service page if token existed

src/pages/menu/page.tsx

@@ -38,6 +38,7 @@ function MenuPage() {
   const { subdomain } = useParams();
   const { isRTL } = useAppSelector((state) => state.locale);
   const { orderType } = useAppSelector((state) => state.order);
+  const { token } = useAppSelector((state) => state.auth);
   const { t } = useTranslation();
   const { data: restaurant, isLoading: isLoadingRestaurant } =
     useGetRestaurantDetailsQuery(subdomain, {
@@ -91,7 +92,9 @@ function MenuPage() {
             <div
               className={`${styles.headerFloatingBtn} ${styles.backButtonContainer}`}
             >
-              <BackButton />
+              <BackButton
+                {...(token ? { customRoute: `/${subdomain}` } : {})}
+              />
             </div>
             <div
               className={`${styles.headerFloatingBtn} ${styles.orderTypeSelectContainer} order-type-select-container`}