### 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)

static const char *target_type = "text/uri-list";
	for (int i = 0; i < p_count; i++) {
		Atom atom = p_list[i];
		if (atom != None && get_atom_name(p_display, atom) == target_type) {
			return atom;
		}
	}
	return None;
}
static Atom pick_target_from_atoms(Display *p_disp, Atom p_t1, Atom p_t2, Atom p_t3) {
	static const char *target_type = "text/uri-list";
	if (p_t1 != None && get_atom_name(p_disp, p_t1) == target_type) {
		return p_t1;
	}
	if (p_t2 != None && get_atom_name(p_disp, p_t2) == target_type) {
		return p_t2;
	}
	if (p_t3 != None && get_atom_name(p_disp, p_t3) == target_type) {
		return p_t3;
	}
	return None;
}
void DisplayServerX11::_get_key_modifier_state(unsigned int p_x11_state, Ref<InputEventWithModifiers> state) {
	state->set_shift_pressed((p_x11_state & ShiftMask));
	state->set_ctrl_pressed((p_x11_state & ControlMask));
	state->set_alt_pressed((p_x11_state & Mod1Mask )); 
	state->set_meta_pressed((p_x11_state & Mod4Mask));
}
BitField<MouseButtonMask> DisplayServerX11::_get_mouse_button_state(MouseButton p_x11_button, int p_x11_type) {