### 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.h
const std::string& file_system_path,
                            const std::string& query) override;
  
#if defined(TOOLKIT_VIEWS) && !defined(OS_MAC)
  gfx::ImageSkia GetDevToolsWindowIcon() override;
#endif
#if defined(OS_LINUX)
  void GetDevToolsWindowWMClass(std::string* name,
                                std::string* class_name) override;
#endif
  
  void OnDevToolsIndexingWorkCalculated(int request_id,
                                        const std::string& file_system_path,
                                        int total_work);
  void OnDevToolsIndexingWorked(int request_id,
                                const std::string& file_system_path,
                                int worked);
  void OnDevToolsIndexingDone(int request_id,
                              const std::string& file_system_path);
  void OnDevToolsSearchCompleted(int request_id,
                                 const std::string& file_system_path,
                                 const std::vector<std::string>& file_paths);
  
  void SetHtmlApiFullscreen(bool enter_fullscreen);
  v8::Global<v8::Value> session_;
  v8::Global<v8::Value> devtools_web_contents_;
  v8::Global<v8::Value> debugger_;
  std::unique_ptr<ElectronJavaScriptDialogManager> dialog_manager_;
  std::unique_ptr<WebViewGuestDelegate> guest_delegate_;
  std::unique_ptr<FrameSubscriber> frame_subscriber_;