test(inspect-ui): drop htmlUrl test, add @types/bun

Pulls bun-types into tsconfig so api.test.ts (which uses bun:test)
typechecks; this was broken from the original feature commit.

inspect-ui/package.json

@@ -14,6 +14,7 @@
     "react-router-dom": "^6.26.2"
   },
   "devDependencies": {
+    "@types/bun": "^1.3.13",
     "@types/react": "^18.3.5",
     "@types/react-dom": "^18.3.0",
     "@vitejs/plugin-react": "^4.3.1",