### 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 (p_target == XInternAtom(x11_display, "TARGETS", 0)) {
		
		Atom data[9];
		data[0] = XInternAtom(x11_display, "TARGETS", 0);
		data[1] = XInternAtom(x11_display, "SAVE_TARGETS", 0);
		data[2] = XInternAtom(x11_display, "MULTIPLE", 0);
		data[3] = XInternAtom(x11_display, "UTF8_STRING", 0);
		data[4] = XInternAtom(x11_display, "COMPOUND_TEXT", 0);
		data[5] = XInternAtom(x11_display, "TEXT", 0);
		data[6] = XA_STRING;
		data[7] = XInternAtom(x11_display, "text/plain;charset=utf-8", 0);
		data[8] = XInternAtom(x11_display, "text/plain", 0);
		XChangeProperty(x11_display,
				p_requestor,
				p_property,
				XA_ATOM,
				32,
				PropModeReplace,
				(unsigned char *)&data,
				sizeof(data) / sizeof(data[0]));