### Godot version

v4.2.rc.custom_build [702227129]

### System information

Godot v4.2.rc (702227129) - Debian GNU/Linux trixie/sid trixie - X11 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 6GB (nvidia) - AMD Ryzen 5 1600 Six-Core Processor (12 Threads)

### Issue description

Found a consistent crash when calling `hide()` from `_notification()`.
It does not happen if the call is deferred.

### Steps to reproduce

The `hide_test.gd` script has a boolean `cause_crash`. If it is true, hovering the mouse over the label crashes without an error in the Godot Editor Console. If it's false it hides the label as expected.

### Minimal reproduction project

[hide_crash.zip](https://github.com/godotengine/godot/files/13452818/hide_crash.zip)

_gui_cancel_tooltip();
	SubViewportContainer *c = Object::cast_to<SubViewportContainer>(gui.mouse_over);
	if (c) {
		for (int i = 0; i < c->get_child_count(); i++) {
			SubViewport *v = Object::cast_to<SubViewport>(c->get_child(i));
			if (!v) {
				continue;
			}
			v->_mouse_leave_viewport();
		}
	}
	if (gui.mouse_over && gui.mouse_over->is_inside_tree()) {
		gui.mouse_over->notification(Control::NOTIFICATION_MOUSE_EXIT_SELF);
	}
	gui.mouse_over = nullptr;
	
	int notification_until = p_until_control ? gui.mouse_over_hierarchy.find(p_until_control) + 1 : 0;
	for (int i = gui.mouse_over_hierarchy.size() - 1; i >= notification_until; i--) {
		if (gui.mouse_over_hierarchy[i]->is_inside_tree()) {
			gui.mouse_over_hierarchy[i]->notification(Control::NOTIFICATION_MOUSE_EXIT);
		}
	}
	gui.mouse_over_hierarchy.resize(notification_until);
}
void Viewport::push_input(const Ref<InputEvent> &p_event, bool p_local_coords) {