feat: add client-side auth protection to routing forms pages (calcom#23743)

* feat: add client-side auth protection to routing forms pages

- Create RoutingFormsShell component with useRedirectToLoginIfUnauthenticated hook
- Wrap form-edit, route-builder, and incomplete-booking pages with RoutingFormsShell
- Ensures consistent auth behavior during client-side navigation
- Maintains existing server-side auth protection
- Fix ESLint warnings: replace 'any' types with 'unknown' types and add eslint-disable for restricted imports

Co-Authored-By: eunjae@cal.com <hey@eunjae.dev>

* refactor: clean up RoutingFormsShell implementation

- Remove unused isPublic parameter from RoutingFormsShell component
- Keep only essential client-side authentication protection functionality
- Fix remaining ESLint warnings to allow commit to pass

Co-Authored-By: eunjae@cal.com <hey@eunjae.dev>

* remove unnecessary hook

* use shell at layout

* rename component

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: eunjae-lee

apps/web/app/(use-page-wrapper)/apps/routing-forms/[...pages]/RoutingFormAuthGuard.tsx

@@ -0,0 +1,9 @@
+"use client";
+
+import { useRedirectToLoginIfUnauthenticated } from "@calcom/features/auth/lib/hooks/useRedirectToLoginIfUnauthenticated";
+
+export function RoutingFormAuthGuard({ children }: { children: React.ReactNode }) {
+  useRedirectToLoginIfUnauthenticated();
+
+  return <>{children}</>;
+}

apps/web/app/(use-page-wrapper)/apps/routing-forms/[...pages]/layout.tsx

@@ -1,7 +1,22 @@
 import type { ReactNode } from "react";
 
 import FormProvider from "./FormProvider";
+import { RoutingFormAuthGuard } from "./RoutingFormAuthGuard";
 
-export default async function Layout({ children }: { children: ReactNode }) {
-  return <FormProvider>{children}</FormProvider>;
+interface LayoutProps {
+  children: ReactNode;
+  params: { pages: string[] };
+}
+
+export default async function Layout({ children, params }: LayoutProps) {
+  const isPublic = params.pages?.[0] === "routing-link";
+  if (isPublic) {
+    return <FormProvider>{children}</FormProvider>;
+  }
+
+  return (
+    <RoutingFormAuthGuard>
+      <FormProvider>{children}</FormProvider>
+    </RoutingFormAuthGuard>
+  );
 }