Revert "chore: add engines field to specify Node.js version requirement (#971)"

This reverts commit ecb5490.

Author: yogeshchoudhary147

package.json

@@ -3,9 +3,6 @@
   "name": "@auth0/auth0-react",
   "version": "2.11.0",
   "description": "Auth0 SDK for React Single Page Applications (SPA)",
-  "engines": {
-    "node": ">=18.18.0"
-  },
   "keywords": [
     "auth0",
     "login",