message: chore: adjust package entry file
diff: "name": "vant",
  "version": "3.2.3",
  "description": "Mobile UI Components built on Vue",
  - "main": "lib/index.js",
  - "module": "es/index.js",
  + "main": "lib/vant.js",
  + "module": "lib/vant.es.js",
  "style": "lib/index.css",
  "typings": "lib/index.d.ts",
  "files": [
  