fix(web): upgrade next.js 16.0.10 → 16.2.2 (payload compat)

Payload CMS v3.81 withPayload() requires Next.js >=16.1.0 for
production turbopack builds. Upgrade resolves the build failure.

Reverts the dev-only withPayload workaround — now loads normally.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/package.json

@@ -43,7 +43,7 @@
     "marked": "16.4.1",
     "motion": "12.23.24",
     "negotiator": "1.0.0",
-    "next": "16.0.10",
+    "next": "16.2.2",
     "next-i18n-router": "5.5.5",
     "next-themes": "0.4.6",
     "nuqs": "2.7.2",