Fix cypress test in github workflow MODULE_NOT_FOUND

Author: volkmarnissen

index.js

@@ -1,6 +1,6 @@
 {
   "name": "@modbus2mqtt/angular",
-  "version": "0.12.9",
+  "version": "0.12.10",
   "sshserver": "[email protected]",
   "credits": "multiple choice by Studio 365 from <a href='https://thenounproject.com/browse/icons/term/multiple-choice/' target='_blank' title='multiple choice Icons'>Noun Project</a> (CC BY 3.0)",
   "scripts": {
@@ -14,7 +14,6 @@
     "test-debug": "ng test --browsers ChromeDebug --karma-config ./karma.conf.ts",
     "prettier": "prettier --write \"./**/*.{js,jsx,mjs,cjs,ts,tsx,json}\""
   },
-  "main": "dist/browser/en-US/index.html",
   "devDependencies": {
     "@angular-devkit/build-angular": "^18.0.4",
     "@angular/animations": "^18.0.7",