chore: Remove all extra dependencies from the learn app (supabase#42642)

This PR removes all extra deps from the `learn` app. The `learn` app was
copy-pasted from `ui-library` so it had a lot of unneeded deps.

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

## Summary by CodeRabbit

* **Chores**
* Streamlined project dependencies by removing unused packages, reducing
the overall dependency surface for better performance and
maintainability.
* Enhanced build cleanup process to remove temporary TypeScript build
artifacts alongside existing cleanup tasks.

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

Author: ivasilov

apps/learn/package.json

@@ -12,105 +12,38 @@
     "lint": "eslint .",
     "lint:mdx": "supa-mdx-lint content --config ../../supa-mdx-lint.config.toml",
     "content:build": "contentlayer2 build",
-    "clean": "rimraf node_modules .next .turbo",
+    "clean": "rimraf node_modules .next .turbo tsconfig.tsbuildinfo",
     "typecheck": "contentlayer2 build && tsc --noEmit -p tsconfig.json"
   },
   "dependencies": {
-    "@hookform/resolvers": "^3.1.1",
-    "@monaco-editor/react": "^4.6.0",
-    "@radix-ui/react-accordion": "*",
-    "@radix-ui/react-alert-dialog": "*",
-    "@radix-ui/react-aspect-ratio": "*",
-    "@radix-ui/react-avatar": "*",
-    "@radix-ui/react-checkbox": "*",
-    "@radix-ui/react-collapsible": "*",
-    "@radix-ui/react-context-menu": "*",
-    "@radix-ui/react-dialog": "*",
-    "@radix-ui/react-dropdown-menu": "*",
-    "@radix-ui/react-hover-card": "*",
-    "@radix-ui/react-label": "*",
-    "@radix-ui/react-menubar": "*",
-    "@radix-ui/react-navigation-menu": "*",
-    "@radix-ui/react-popover": "*",
-    "@radix-ui/react-progress": "*",
-    "@radix-ui/react-radio-group": "*",
-    "@radix-ui/react-scroll-area": "*",
-    "@radix-ui/react-select": "*",
-    "@radix-ui/react-separator": "*",
-    "@radix-ui/react-slider": "*",
-    "@radix-ui/react-slot": "*",
-    "@radix-ui/react-switch": "*",
-    "@radix-ui/react-tabs": "*",
-    "@radix-ui/react-toast": "*",
-    "@radix-ui/react-toggle": "*",
-    "@radix-ui/react-toggle-group": "*",
-    "@radix-ui/react-tooltip": "*",
-    "@react-router/fs-routes": "^7.4.0",
-    "@supabase/postgrest-js": "catalog:",
-    "@supabase/supa-mdx-lint": "0.2.6-alpha",
-    "@supabase/vue-blocks": "workspace:*",
-    "@tanstack/react-query": "^5.83.0",
-    "axios": "^1.12.0",
-    "class-variance-authority": "*",
-    "cmdk": "^1.0.0",
     "common": "workspace:*",
-    "common-tags": "^1.8.2",
     "contentlayer2": "0.4.6",
-    "eslint-config-supabase": "workspace:*",
     "framer-motion": "^11.0.3",
-    "icons": "workspace:*",
     "jotai": "^2.8.0",
     "lucide-react": "*",
     "next": "catalog:",
     "next-contentlayer2": "0.4.6",
     "next-themes": "^0.3.0",
-    "openai": "^5.9.0",
-    "openapi-fetch": "0.12.4",
     "react": "catalog:",
-    "react-docgen": "^7.0.3",
-    "react-dom": "catalog:",
-    "react-hook-form": "^7.45.0",
-    "react-markdown": "^10.1.0",
     "react-wrap-balancer": "^1.1.0",
-    "recharts": "^2.8.0",
     "rehype-autolink-headings": "^7.1.0",
     "rehype-pretty-code": "^0.9.0",
     "rehype-slug": "^6.0.0",
     "remark": "^14.0.3",
     "remark-code-import": "^1.2.0",
     "remark-gfm": "^4.0.0",
-    "sonner": "^1.5.0",
     "ui": "workspace:*",
     "ui-patterns": "workspace:*",
-    "unist-util-visit": "^5.0.0",
-    "vaul": "^0.9.6",
-    "zod": "catalog:"
+    "unist-util-visit": "^5.0.0"
   },
   "devDependencies": {
-    "@react-router/dev": "^7.1.5",
     "@shikijs/compat": "^1.1.7",
-    "@supabase/ssr": "^0.7.0",
-    "@supabase/supabase-js": "catalog:",
-    "@tanstack/react-router": "^1.114.27",
-    "@tanstack/react-start": "^1.114.25",
-    "@types/common-tags": "^1.8.4",
-    "@types/lodash": "^4.17.16",
+    "@supabase/supa-mdx-lint": "0.3.1",
     "@types/react": "catalog:",
-    "@types/react-dom": "catalog:",
     "config": "workspace:^",
-    "dotenv": "^17.2.3",
-    "lodash": "^4.17.21",
     "mdast-util-toc": "^6.1.1",
-    "postcss": "^8.5.3",
-    "react-dropzone": "^14.3.8",
-    "react-router": "^7.5.2",
-    "rimraf": "^4.1.3",
-    "shadcn": "^3.0.0",
-    "shiki": "^1.1.7",
-    "tailwindcss": "catalog:",
     "tsconfig": "workspace:*",
     "tsx": "catalog:",
-    "typescript": "catalog:",
-    "vite": "catalog:"
+    "shiki": "^1.1.7"
   }
 }