### 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

16.0.0

### What operating system are you using?

Windows

### Operating System Version

WIN10 20H2

### What arch are you using?

x64

### Last Known Working Electron version

_No response_

### Expected Behavior

 win.webContents.savePage('d:/aaaaaa.html', 'HTMLComplete').then(() => {
      console.log('Page was saved successfully.')
    }).catch(err => {
      console.log(err)
    })

it will generate a html page file at d: 

### Actual Behavior

savePage has three formats that can be used

if use HTMLComplete
 only produced a aaaaaa_files empty folder

if use HTMLonly 
No files are generated nor error callbacks are generated

MHTML option works fine

### Testcase Gist URL

_No response_

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
auto* ontents = GetWebContents();
  if (!ontents)
    return;
  if (active) {
    eye_dropper_ = std::make_unique<DevToolsEyeDropper>(
        ontents, base::BindRepeating(&WebContents::ColorPickedInEyeDropper,
                                          base::Unretained(this)));
  } else {
    eye_dropper_.reset();
  }
}
void WebContents::ColorPickedInEyeDropper(int r, int g, int b, int a) {
  base::DictionaryValue color;
  color.SetInteger("r", r);
  color.SetInteger("g", g);
  color.SetInteger("b", b);
  color.SetInteger("a", a);
  inspectable_ontents_->CallClientFunction(
      "DevToolsAPI.eyeDropperPickedColor", &color, nullptr, nullptr);
}
#if defined(TOOLKIT_VIEWS) && !defined(OS_MAC)
ui::ImageModel WebContents::GetDevToolsWindowIcon() {
  return owner_window() ? owner_window()->GetWindowAppIcon() : ui::ImageModel{};
}
#endif
#if defined(OS_LINUX)
void WebContents::GetDevToolsWindowWMClass(std::string* name,