### 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_browser_window.cc
if (api_web_contents_) {
    web_contents()->RestoreFocus();
#if !defined(OS_MAC)
    if (!api_web_contents_->IsDevToolsOpened())
      web_contents()->Focus();
#endif
  }
  BaseWindow::OnWindowFocus();
}
void BrowserWindow::OnWindowIsKeyChanged(bool is_key) {
#if defined(OS_MAC)
  auto* rwhv = web_contents()->GetRenderWidgetHostView();
  if (rwhv)
    rwhv->SetActive(is_key);
#endif
}
void BrowserWindow::OnWindowResize() {
#if defined(OS_MAC)
  if (!draggable_regions_.empty()) {
    UpdateDraggableRegions(draggable_regions_);
  } else {
    for (NativeBrowserView* view : window_->browser_views()) {
      view->UpdateDraggableRegions(view->GetDraggableRegions());
    }
  }
#endif
  BaseWindow::OnWindowResize();
}
void BrowserWindow::OnWindowLeaveFullScreen() {