### 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 feature request that matches the one I want to file, without success.

### Problem Description

Developer cannot change caption bar theme. It remains white even if windows theme is set to dark.

### Proposed Solution

When themesource in electron is set to dark, use dwm window attributes or check an example here: [Notepad++ Source code](https://github.com/notepad-plus-plus/notepad-plus-plus/tree/master/PowerEditor/src/DarkMode)

### Alternatives Considered

Check out in Notepad++, Sublime Text, Windows Explorer, MSYS Console...

### Additional Information

_No response_
shell/browser/win/dark_mode.h
#ifndef ELECTRON_SHELL_BROWSER_WIN_DARK_MODE_H_
#define ELECTRON_SHELL_BROWSER_WIN_DARK_MODE_H_
#ifdef WIN32_LEAN_AND_MEAN
#include <Windows.h>
#else
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#undef WIN32_LEAN_AND_MEAN
#endif
#include "ui/native_theme/native_theme.h"
namespace electron {
namespace win {
void SetDarkModeForWindow(HWND hWnd, ui::NativeTheme::ThemeSource theme_source);
}  
}  
#endif