Using chrome manifest 3, Im trying to simulate the keypress of (Command+Option+i) [duplicate]

Question

I am trying to create my first chrome extension that opens up the dev tool via icon click of the extension.

I am trying to simulate the keypress normally required to open the dev tools in chorme mac(Command+Option+i), I tried to first just simulate the ( Enter ) key to test if the code works meaning when I click the chrome extension ICON it simulates the enter key being pressed, but no luck

attached are my 3 files that make the extension.. manifest.js ,background.js content-script.js

Manifest.js

{
  "name": "Getting Started Example",
  "description": "Build an Extension!",
  "version": "1.0",
  "manifest_version": 3,
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [ "activeTab", "scripting","storage"],
  "action": {
    "default_title":"Click to open dev tools",
    "default_icon": {
      "16": "/images/i.png",
      "32": "/images/i.png",
      "48": "/images/i.png",
      "128": "/images/i.png"
    }
  },
  "icons": {
    "16": "/images/i.png",
    "32": "/images/i.png",
    "48": "/images/i.png",
    "128": "/images/i.png"
  }
  
}

background.js

//// background.js ////
chrome.action.onClicked.addListener((tab) => {
  chrome.scripting.executeScript({
    target: { tabId: tab.id },
    files: ['content-script.js']
  });
});

Content-script.js

//// content-script.js ////
// document.body.style.backgroundColor = '#6C8CA8';

let keyEvent = new KeyboardEvent('keypresc', {key: 'Enter'});
document.window.dispatchEvent(keyEvent);

// alert( "key pressed");

I tried to first get the script injection working when I click the icon to execute the content-script.js after some time and trial It managed to work. I used changed background color to experiment with that.

Next, I tried to create a keyevent that simulates pressing the "Enter" key I would go to the URL bar and type a website hover over it and press click the icon that should've simulated the enter key but did not work.

I added an alert to make sure that the javascript was executing and it showed me that it is, but my actual code to simulate "enter" is wrong.