chore: react - main file adjustment

Author: jerzy-mankowski

packages/react/package.json

@@ -5,7 +5,7 @@
   "author": "cloudinary",
   "license": "MIT",
   "repository": "https://github.com/cloudinary/frontend-frameworks",
-  "main": "dist/index.esm.js",
+  "main": "dist/index.js",
   "files": [
     "package.json",
     "dist"