feat(chore): bump cn (#51016)

## Problem

currently using `cn` 0.2.5 makes `@shadcn/lint` lint run printed a
notice as it needs 0.3.2 or later

## Solution

- added `cn: ^0.4.0` to the pnpm catalog. `packages/ui` and `blocks/vue`
now use `catalog:` so they stay on the same version
- added `cn` to the root `devDependencies`
- runtime changes from 0.2.5 to 0.4.0

<!--
## Preview links

If relevant, include links to changed pages for easy review access.

Copy the preview base URL from the Vercel bot comment on this PR. Use
the following table as an example template.

| Site | Live | Preview | Search for |
| -------------- |
-------------------------------------------------------------------------
|
------------------------------------------------------------------------------------------------------------
| ----------------------------- |
| WWW | [/blog/your-post](https://supabase.com/blog/your-post) |
[/blog/your-post](https://zone-www-dot-com-git-branch-name-supabase.vercel.app/blog/your-post)
| unique phrase from the change |
| Docs |
[/docs/guides/your-page](https://supabase.com/docs/guides/your-page) |
[/docs/guides/your-page](https://docs-git-branch-name-supabase.vercel.app/docs/guides/your-page)
| unique phrase from the change |
| Studio | [/dashboard](https://supabase.com/dashboard) |
[/dashboard](https://studio-git-branch-name-supabase.vercel.app/dashboard)
| unique phrase from the change |
| Design system | [/design-system](https://supabase.com/design-system) |
[/design-system](https://design-system-git-branch-name-supabase.vercel.app/design-system)
| unique phrase from the change |
| UI library | [/library](https://supabase.com/library) |
[/library](https://ui-library-git-branch-name-supabase.vercel.app/library)
| unique phrase from the change |
| Knowledge base |
[/kb/guides/your-page](https://supabase.com/kb/guides/your-page) |
[/kb/guides/your-page](https://kb-git-branch-name-supabase.vercel.app/kb/guides/your-page)
| unique phrase from the change |
-->

<!-- ## Additional context

Optionally add any other context or screenshots.

-->

## Review instructions

1. run `pnpm install`
2. run `pnpm --filter ui exec vitest run` and `pnpm --filter ui-patterns
exec vitest run` and see them pass
3. run `pnpm --filter @supabase/vue-blocks run typecheck` and see it
pass

## Checklist

Check all before review:

- [x] I have read
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
- [x] If I wrote a new docs topic or edited an existing topic, I used
the `/write-the-docs` or `/edit-the-docs` skill, which applies the docs
[style
guide](https://github.com/supabase/supabase/tree/master/apps/docs/style-guide)


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated package version management across the project to keep related
packages aligned. This maintenance change does not alter the app’s
features or behavior.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/ui/package.json

@@ -18,7 +18,7 @@
     "@tailwindcss/forms": "^0.5.11",
     "@tailwindcss/typography": "^0.5.19",
     "class-variance-authority": "^0.7.1",
-    "cn": "^0.2.4",
+    "cn": "catalog:",
     "cmdk": "^1.1.1",
     "color": "^4.2.3",
     "date-fns": "^2.30.0",