fix(private-room): preserve payment return route

src/router/routes.ts

@@ -8,6 +8,7 @@
  */
 
 import type { PayChannel } from "@/data/dto/payment";
+import type { AppSubscriptionReturnTo } from "@/router/navigation-types";
 import {
   PAYMENT_ANALYTICS_ENTRY_PARAM,
   PAYMENT_ANALYTICS_REASON_PARAM,
@@ -36,7 +37,7 @@ export const ROUTE_BUILDERS = {
     type: "vip" | "topup",
     options: {
       payChannel?: PayChannel;
-      returnTo?: "chat";
+      returnTo?: Exclude<AppSubscriptionReturnTo, null>;
       analytics?: PaymentAnalyticsContext;
     } = {},
   ): `/subscription?${string}` => {