feat: add env var for signup flow

app/[lang]/(live)/(public)/[contentType]/[uid]/page.tsx

@@ -1,5 +1,7 @@
+import { headers } from "next/headers"
 import { notFound } from "next/navigation"
 
+import { isSignupPage } from "@/constants/routes/signup"
 import { env } from "@/env/server"
 
 import HotelPage from "@/components/ContentType/HotelPage"
@@ -22,17 +24,24 @@ export default function ContentTypePage({
 }: PageArgs<LangParams & ContentTypeParams & UIDParams, {}>) {
   setLang(params.lang)
 
+  const pathname = headers().get("x-pathname") || ""
+  const isSignupRoute = isSignupPage(pathname)
+
   switch (params.contentType) {
     case "collection-page":
       if (env.HIDE_FOR_NEXT_RELEASE) {
         return notFound()
       }
       return <CollectionPage />
-    case "content-page":
-      if (env.HIDE_FOR_NEXT_RELEASE) {
+    case "content-page": {
+      if (!isSignupRoute && env.HIDE_FOR_NEXT_RELEASE) {
+        return notFound()
+      }
+      if (isSignupRoute && !env.SHOW_SIGNUP_FLOW) {
         return notFound()
       }
       return <ContentPage />
+    }
     case "loyalty-page":
       return <LoyaltyPage />
     case "hotel-page":