### Godot version

v3.5.1.stable.official [6fed1ffa3]

### System information

Windows 10, NVIDIA GeForce GTX 760

### Issue description

OS.kill() will not terminate process that it's not spawned by game although it is noted in the documentation that it can also be used to kill processes that were not spawned by the game.


### Steps to reproduce

Use PID when calling OS.kill() that it isn't spawned by the game.

### Minimal reproduction project

N/A
if (fnd != INVALID_HANDLE_VALUE) {
			String fname = String::utf16((const char16_t *)d.cFileName);
			if (!fname.is_empty()) {
				fpath = fpath.get_base_dir().path_join(fname);
			}
			FindClose(fnd);
		}
		return fpath;
	}
	return String();
}
String OS_Windows::get_executable_path() const {
	WCHAR bufname[4096];
	GetModuleFileNameW(nullptr, bufname, 4096);
	String s = String::utf16((const char16_t *)bufname).replace("\\", "/");
	return s;
}
bool OS_Windows::has_environment(const String &p_var) const {
#ifdef MINGW_ENABLED
	return _wgetenv((LPCWSTR)(p_var.utf16().get_data())) != nullptr;
#else
	WCHAR *env;
	size_t len;
	_wdupenv_s(&env, &len, (LPCWSTR)(p_var.utf16().get_data()));
	const bool has_env = env != nullptr;
	free(env);
	return has_env;
#endif
}
String OS_Windows::get_environment(const String &p_var) const {