### 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)

if (XGetWindowProperty(x11_display, x11_window, desktop_geometry_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &geom_len, &remaining, &geom_data) == Success) {
								if ((format == 32) && (geom_len >= 2) && geom_data) {
									desktop_valid = true;
									long *size_data = (long *)geom_data;
									desktop_rect.size.x = size_data[0];
									desktop_rect.size.y = size_data[1];
								}
							}
							if (geom_data) {
								XFree(geom_data);
							}
						}
					}
					
					if (desktop_valid) {
						Atom desktop_viewport_prop = XInternAtom(x11_display, "_NET_DESKTOP_VIEWPORT", True);
						if (desktop_viewport_prop != None) {
							unsigned long viewport_len = 0;
							unsigned char *viewport_data = nullptr;
							if (XGetWindowProperty(x11_display, x11_window, desktop_viewport_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &viewport_len, &remaining, &viewport_data) == Success) {
								if ((format == 32) && (viewport_len >= 2) && viewport_data) {
									desktop_valid = true;
									long *pos_data = (long *)viewport_data;
									desktop_rect.position.x = pos_data[0];
									desktop_rect.position.y = pos_data[1];
								}
							}
							if (viewport_data) {
								XFree(viewport_data);
							}