### 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/native_window_mac.h
void OnDisplayMetricsChanged(const display::Display& display,
                               uint32_t changed_metrics) override;
 private:
  
  void AddContentViewLayers();
  void InternalSetWindowButtonVisibility(bool visible);
  void InternalSetStandardButtonsVisibility(bool visible);
  void InternalSetParentWindow(NativeWindow* parent, bool attach);
  void SetForwardMouseMessages(bool forward);
  ElectronNSWindow* window_;  
  base::scoped_nsobject<ElectronNSWindowDelegate> window_delegate_;
  base::scoped_nsobject<ElectronPreviewItem> preview_item_;
  base::scoped_nsobject<ElectronTouchBar> touch_bar_;
  base::scoped_nsobject<WindowButtonsView> buttons_view_;
  
  id wheel_event_monitor_;
  
  
  
  base::scoped_nsobject<NSView> container_view_;
  
  std::unique_ptr<RootViewMac> root_view_;
  bool is_kiosk_ = false;
  bool zoom_to_page_width_ = false;
  bool resizable_ = true;
  base::Optional<gfx::Point> traffic_light_position_;
  std::queue<bool> pending_transitions_;
  FullScreenTransitionState fullscreen_transition_state() const {
    return fullscreen_transition_state_;
  }