### Godot version

4.1.dev 2e273f0e35800f2bcc7c05db54100caa97928f69

### System information

macOS 13.4

### Issue description

Removing a SpinBox from the node tree using `remove_child` during the line edit text submit signal will crash the engine.

```
handle_crash: Program crashed with signal 11
Engine version: Godot Engine v4.1.dev.custom_build (2e273f0e35800f2bcc7c05db54100caa97928f69)
Dumping the backtrace. Please include this when reporting the bug to the project developer.
[1] 1   libsystem_platform.dylib            0x0000000183b5aa24 _sigtramp + 56
[2] Viewport::gui_get_focus_owner() (in godot.macos.editor.arm64) + 32
[3] SpinBox::_line_edit_focus_exit() (in godot.macos.editor.arm64) + 28
[4] CallQueue::_call_function(Callable const&, Variant const*, int, bool) (in godot.macos.editor.arm64) + 336
[5] CallQueue::flush() (in godot.macos.editor.arm64) + 908
[6] SceneTree::physics_process(double) (in godot.macos.editor.arm64) + 244
[7] Main::iteration() (in godot.macos.editor.arm64) + 528
```

### Steps to reproduce

Open the minimal reproduction project, click on the SpinBox, press enter, and the engine crashes.

### Minimal reproduction project

[SpinBoxTextSubmitCrash.zip](https://github.com/godotengine/godot/files/11631081/SpinBoxTextSubmitCrash.zip)

} else {
		vr = window->get_usable_parent_rect();
	}
	if (r.size.x + r.position.x > vr.size.x + vr.position.x) {
		
		r.position.x = gui.tooltip_pos.x - r.size.x - tooltip_offset.x;
		if (r.position.x < vr.position.x) {
			r.position.x = vr.position.x + vr.size.x - r.size.x;
		}
	} else if (r.position.x < vr.position.x) {
		r.position.x = vr.position.x;
	}
	if (r.size.y + r.position.y > vr.size.y + vr.position.y) {
		
		r.position.y = gui.tooltip_pos.y - r.size.y - tooltip_offset.y;
		if (r.position.y < vr.position.y) {
			r.position.y = vr.position.y + vr.size.y - r.size.y;
		}
	} else if (r.position.y < vr.position.y) {
		r.position.y = vr.position.y;
	}
	gui.tooltip_popup->set_position(r.position);
	gui.tooltip_popup->set_size(r.size);
	DisplayServer::WindowID active_popup = DisplayServer::get_singleton()->window_get_active_popup();
	if (active_popup == DisplayServer::INVALID_WINDOW_ID || active_popup == window->get_window_id()) {
		gui.tooltip_popup->show();
	}
	gui.tooltip_popup->child_controls_changed();
}
bool Viewport::_gui_call_input(Control *p_control, const Ref<InputEvent> &p_input) {