feat: Add a toast to refresh the page if there's a new version of Studio available (#36323)

* Initial work.

* Add missing import.

* Minor fixes.

* Minor fixes.

* Add a feature flag for the refresh toast.

* Add a commit for testing. Revert before merging.

* Remove header caching for testing.

* Tiny lint

* Fix

* One more

---------

Co-authored-by: Joshen Lim <joshenlimek@gmail.com>

turbo.json

@@ -102,7 +102,7 @@
         "AI_PRO_MODEL",
         "AI_NORMAL_MODEL"
       ],
-      "passThroughEnv": ["CURRENT_CLI_VERSION"],
+      "passThroughEnv": ["CURRENT_CLI_VERSION", "VERCEL_GIT_COMMIT_SHA"],
       "outputs": [".next/**", "!.next/cache/**"]
     },
     "www#build": {