### 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 gin_helper::Dictionary& options);
  
  
  
  static gin::Handle<WebContents> CreateAndTake(
      v8::Isolate* isolate,
      std::unique_ptr<content::WebContents> web_contents,
      Type type);
  
  
  static WebContents* From(content::WebContents* web_contents);
  static WebContents* FromID(int32_t id);
  
  
  
  
  static gin::Handle<WebContents> FromOrCreate(
      v8::Isolate* isolate,
      content::WebContents* web_contents);
  static gin::Handle<WebContents> CreateFromWebPreferences(
      v8::Isolate* isolate,
      const gin_helper::Dictionary& web_preferences);
  
  static gin::WrapperInfo kWrapperInfo;
  static v8::Local<v8::ObjectTemplate> FillObjectTemplate(
      v8::Isolate*,
      v8::Local<v8::ObjectTemplate>);
  const char* GetTypeName() override;
  void Destroy();
  base::WeakPtr<WebContents> GetWeakPtr() { return weak_factory_.GetWeakPtr(); }