### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/main/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/main/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 bug report that matches the one I want to file, without success.

### Electron Version

17.0.0

### What operating system are you using?

Windows

### Operating System Version

Windows 10 Version 21H1

### What arch are you using?

x64

### Last Known Working Electron version

14.2.3

### Expected Behavior

background should transparent if background is #00000000

### Actual Behavior

has a white background

### Testcase Gist URL

_No response_

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
base::BindRepeating(&WebContents::OnPaint, base::Unretained(this)));
      params.view = view;
      params.delegate_view = view;
      ontents = content::WebContents::Create(params);
      view->SetWebContents(ontents.get());
    } else {
#endif
      ontents = content::WebContents::Create(params);
#if BUILDFLAG(ENABLE_OSR)
    }
  } else if (IsOffScreen()) {
    bool transparent = false;
    options.Get(options::kTransparent, &transparent);
    content::WebContents::CreateParams params(session->browser_context());
    auto* view = new OffScreenWebContentsView(
        transparent,
        base::BindRepeating(&WebContents::OnPaint, base::Unretained(this)));
    params.view = view;
    params.delegate_view = view;
    ontents = content::WebContents::Create(params);
    view->SetWebContents(ontents.get());
#endif
  } else {
    content::WebContents::CreateParams params(session->browser_context());
    params.initially_hidden = !initially_shown;
    ontents = content::WebContents::Create(params);
  }
  InitWithSessionAndOptions(isolate, std::move(ontents), session, options);
}
void WebContents::InitZoomController(content::WebContents* ontents,