chore: revert auto-generated next-env.d.ts change

Drop the unintended path change (.next/dev/types → .next/types)
that `next build` auto-wrote — this file is managed by Next.js
and should not carry build-vs-dev path diffs across branches.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.