### Godot version

v4.0.3.stable.official [5222a99f5]

### System information

Windows 11, AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx     2.10 GHz

### Issue description

  The request_attention () function on Windows only flashes the taskbar, but what if the taskbar is hidden ?  In display_server_windows.cpp, FLASHW_TRAY is used, when it might be more appropriate to use FLASHW_ALL which flashes both the caption and the tray.

### Steps to reproduce

N/A

### Minimal reproduction project

N/A
if (windows[window_id].mpass) {
				return HTTRANSPARENT;
			}
		} break;
		case WM_MOUSEACTIVATE: {
			if (windows[window_id].no_focus) {
				return MA_NOACTIVATEANDEAT; 
			} else if (windows[window_id].is_popup) {
				return MA_NOACTIVATE; 
			}
		} break;
		case WM_SETFOCUS: {
			windows[window_id].window_has_focus = true;
			last_focused_window = window_id;
			
			_set_mouse_mode_impl(mouse_mode);
			if (!app_focused) {
				if (OS::get_singleton()->get_main_loop()) {
					OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_APPLICATION_FOCUS_IN);
				}
				app_focused = true;
			}
		} break;
		case WM_KILLFOCUS: {
			windows[window_id].window_has_focus = false;
			last_focused_window = window_id;
			
			ReleaseCapture();
			
			for (const KeyValue<int, Vector2> &E : touch_state) {