fix: fix browser module resolution for parcel (#15426)

web3.js/package.json

@@ -20,6 +20,7 @@
     "access": "public"
   },
   "browser": {
+    "./lib/index.cjs.js": "./lib/index.browser.esm.js",
     "./lib/index.esm.js": "./lib/index.browser.esm.js"
   },
   "main": "lib/index.cjs.js",