### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

12.0.5

### What operating system are you using?

macOS

### Operating System Version

11.2.3

### What arch are you using?

arm64 (including Apple Silicon)

### Last Known Working Electron version

_No response_

### Expected Behavior

`document.hasFocus()` is only `true` for the window that has focus.

### Actual Behavior

Ever window reports `document.hasFocus()` to be `true` right after opening.

### Testcase Gist URL

https://gist.github.com/16e6fc829febd0cab115dfd0850a31be

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
gin::HContents> WebContents::New(
    v8::Isolate* isolate,
    const gin_helper::Dictionary& options) {
  gin::HContents> handle =
      gin::CreateHandle(isolate, new WebContents(isolate, options));
  v8::TryCatch try_catch(isolate);
  gin_helper::CallMethod(isolate, handle.get(), "_init");
  if (try_catch.HasCaught()) {
    node::errors::TriggerUncaughtException(isolate, try_catch);
  }
  return handle;
}
 static
gin::HContents> WebContents::CreateAndTake(
    v8::Isolate* isolate,
    std::unique_ptr<content::WebContents> ontents,
    Type type) {
  gin::HContents> handle = gin::CreateHandle(
      isolate, new WebContents(isolate, std::move(ontents), type));
  v8::TryCatch try_catch(isolate);
  gin_helper::CallMethod(isolate, handle.get(), "_init");
  if (try_catch.HasCaught()) {
    node::errors::TriggerUncaughtException(isolate, try_catch);
  }
  return handle;
}
 static