Fix prerender tags when notFound is called (#74577) (#74607)

This backports #74577 which ensures we don't lose tags added to a page
before notFound() is called.

Author: ijjk

packages/next/src/server/app-render/app-render.tsx

@@ -3777,7 +3777,7 @@ async function prerenderToStream(
       revalidate: INFINITE_CACHE,
       expire: INFINITE_CACHE,
       stale: INFINITE_CACHE,
-      tags: [...implicitTags],
+      tags: [...(prerenderStore?.tags || implicitTags)],
     })
     const errorRSCPayload = await workUnitAsyncStorage.run(
       prerenderLegacyStore,