fix: remove preinstall

revert 569fe62 completely

See vuejs@569fe62#r123111912

Author: sxzz

package.json

@@ -36,7 +36,6 @@
     "build-preview": "vite build -c vite.preview.config.ts",
     "format": "prettier --write .",
     "release": "bumpp -r",
-    "preinstall": "npx only-allow pnpm",
     "prepublishOnly": "npm run build && npm run build-types"
   },
   "simple-git-hooks": {