fix: downgrade nextjs to fix error with react email (#1516)

apps/web/app/api/v1/og/route.tsx

@@ -1,5 +1,6 @@
-import { NextRequest } from "next/server";
-import { ImageResponse } from "next/og";
+import { ImageResponse, NextRequest } from "next/server";
+/* import { NextRequest } from "next/server";
+import { ImageResponse } from "next/og"; */
 // App router includes @vercel/og.
 // No need to install it.
 

apps/web/app/s/[surveyId]/page.tsx

@@ -50,13 +50,14 @@ export async function generateMetadata({ params }: LinkSurveyPageProps): Promise
   const brandColor = getBrandColorForURL(product.brandColor);
   const surveyName = getNameForURL(survey.name);
 
-  const ogImgURL = `${WEBAPP_URL}/api/v1/og?brandColor=${brandColor}&name=${surveyName}`;
+  const ogImgURL = `/api/v1/og?brandColor=${brandColor}&name=${surveyName}`;
 
   return {
+    metadataBase: new URL(WEBAPP_URL),
     openGraph: {
       title: survey.name,
       description: "Create your own survey like this with Formbricks' open source survey suite.",
-      url: `${WEBAPP_URL}/${survey.id}`,
+      url: `/s/${survey.id}`,
       siteName: "",
       images: [ogImgURL],
       locale: "en_US",