### Godot version

v4.0.beta15.mono.official [4fa6edc88]

### System information

Linux, Xorg

### Issue description

The entire window loses focus if you ungrab focus from a Control. 
This doesn't seem to happen in Beta 14 and older betas.

### Steps to reproduce

1. Create a Control that can grab focus (tested with LineEdit and TextEdit)
2. Grab focus
3. Release focus via release_focus() or hiding the node

### Minimal reproduction project

[FocusMinimal.zip](https://github.com/godotengine/godot/files/10498175/FocusMinimal.zip)

last_click_button_index = MouseButton::NONE;
							mb->set_double_click(true);
						}
					} else if (mb->get_button_index() < MouseButton::WHEEL_UP || mb->get_button_index() > MouseButton::WHEEL_RIGHT) {
						last_click_button_index = mb->get_button_index();
					}
					if (!mb->is_double_click()) {
						last_click_ms += diff;
						last_click_pos = Point2i(event.xbutton.x, event.xbutton.y);
					}
				} else {
					DEBUG_LOG_X11("[%u] ButtonRelease window=%lu (%u), button_index=%u \n", frame, event.xbutton.window, window_id, mb->get_button_index());
					WindowID window_id_other = INVALID_WINDOW_ID;
					Window wd_other_x11_window;
					if (wd.focused) {
						
						WindowID popup_id = _get_focused_window_or_popup();
						if (popup_id != INVALID_WINDOW_ID && popup_id != window_id) {
							window_id_other = popup_id;
							wd_other_x11_window = windows[popup_id].x11_window;
						}
					} else {
						
						
						
						
						
						for (const KeyValue<WindowID, WindowData> &E : windows) {
							if (E.value.focused) {
								if (E.key != window_id) {