Fix tests after Culqi integration

Author: Sebas Vallejo

src/routes/product/product.test.tsx

@@ -51,14 +51,14 @@ describe("Product Component", () => {
       expect(titleElement).toHaveTextContent("Awesome Product");
     });
 
-    it("should render product price with dollar sign", () => {
+    it("should render product price with correct currency", () => {
       // Step 1: Setup - Create test props
       const props = createTestProps({ price: 150.99 });
       // Step 2: Mock - Component mocks already set up above
       // Step 3: Call - Render component
       render(<Product {...props} />);
       // Step 4: Verify - Check price is rendered correctly
-      expect(screen.queryByText("$150.99")).toBeInTheDocument();
+      expect(screen.queryByText("S/150.99")).toBeInTheDocument();
     });
 
     it("should render product description", () => {

src/routes/signup/index.tsx

@@ -94,7 +94,7 @@ export async function action({ request }: Route.ActionArgs) {
 
 export async function loader({ request }: Route.LoaderArgs) {
   await redirectIfAuthenticated(request);
-  return null;
+  return undefined;
 }
 
 export default function Signup({ actionData }: Route.ComponentProps) {