fix: conditionally run preinstall hook

Author: cloydlau

package.json

@@ -44,7 +44,7 @@
     "test-unit": "vitest run",
     "coverage": "vitest run --coverage",
     "release": "esno ./scripts/release.mts",
-    "preinstall": "npx only-allow pnpm",
+    "preinstall": "node -e \"if (process.env.INIT_CWD === process.cwd()) { process.exit(1) }\" || npx only-allow pnpm",
     "postinstall": "node -e \"if (process.env.INIT_CWD === process.cwd()) { process.exit(1) }\" || npx simple-git-hooks"
   },
   "peerDependencies": {