fix: board not found flicker on reloading public boards (#149)

* fix: board not found flicker on reloading public boards

* fix: using netx-theme's ThemeProvider

* chore: installing next-theme

* fix: theme issue on landing page

* fix: image theme hydration issue

apps/web/package.json

@@ -49,6 +49,7 @@
     "next": "^15.3.4",
     "next-logger": "^5.0.1",
     "next-runtime-env": "^1.7.2",
+    "next-themes": "^0.4.6",
     "nextjs-cors": "^2.2.0",
     "pino": "^9.6.0",
     "posthog-js": "^1.254.0",