fix(private-room): preserve payment return route

src/router/__tests__/navigation-resolver.test.ts

@@ -54,6 +54,17 @@ describe("navigation resolver", () => {
     ).toBe(ROUTE_BUILDERS.authWithRedirect(subscriptionUrl));
   });
 
+  it("builds private room subscription return urls", () => {
+    expect(
+      ROUTE_BUILDERS.subscription("topup", {
+        payChannel: "stripe",
+        returnTo: "private-room",
+      }),
+    ).toBe(
+      "/subscription?type=topup&payChannel=stripe&returnTo=private-room",
+    );
+  });
+
   it("allows not logged in users to enter chat for guest bootstrap", () => {
     expect(
       resolveRouteGuardRedirect({