fix(cli): remove docsearch (#11415)

* fix(cli): remove docsearch

* chore: remove react

* docs: add changelog

packages/vant-cli/package.json

@@ -43,15 +43,11 @@
     "@types/fs-extra": "^9.0.13",
     "@types/less": "^3.0.3",
     "@types/markdown-it": "^12.2.3",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
     "vue": "^3.2.45"
   },
   "dependencies": {
     "@babel/core": "^7.18.13",
     "@babel/preset-typescript": "^7.18.6",
-    "@docsearch/css": "^3.2.1",
-    "@docsearch/js": "^3.2.1",
     "@types/jest": "^29.1.1",
     "@vant/eslint-config": "^3.5.0",
     "@vant/touch-emulator": "^1.4.0",