### Godot version

543750a1b3f5696f9ba8e91cb49dc7db05d2ae62

### System information

Windows 10, Vulkan

### Issue description

This is a regression since v4.1.dev4.official [5c2295ff5], I can't bisect atm to find the commit that caused it, maybe https://github.com/godotengine/godot/pull/77651 but that's just a guess.
When a HBoxContainer has a label child, and that label's text is changed, one used to be able to find the new size of the container by using call_deferred, this is no longer the case.

MRP correct behavior (v4.1.dev4.official [5c2295ff5]):
![image](https://github.com/godotengine/godot/assets/115422160/1b4a2b6f-ef19-42c1-b3e5-9f0c499a7a8c)
MRP incorrect (543750a1b3f5696f9ba8e91cb49dc7db05d2ae62):
![image](https://github.com/godotengine/godot/assets/115422160/25b711ae-7c3a-4c48-aff7-383bb8f600c3)




### Steps to reproduce

```gdscript
extends Control

@onready var h_box_container: HBoxContainer = $HBoxContainer
@onready var label: Label = $HBoxContainer/Label

func _ready() -> void:
	label.text = "larger non default text"
	print("h_box_container size.x: ", h_box_container.size.x)
	call_deferred("size_after_text_changed")

func size_after_text_changed() -> void:
	print("deferred h_box_container size.x: ", h_box_container.size.x)
```

### Minimal reproduction project

[call_deferred bug.zip](https://github.com/godotengine/godot/files/11654441/call_deferred.bug.zip)

if (c) {
			if (c->data.RI) {
				break;
			}
		}
		base = base->get_parent();
	}
	if (!base) {
		return nullptr;
	}
	_window_find_focus_neighbor(vdir, base, points, maxd, dist, &result);
	return result;
}
void Control::_window_find_focus_neighbor(const Vector2 &p_dir, Node *p_at, const Point2 *p_points, real_t p_min, real_t &r_closest_dist, Control **r_closest) {
	if (Object::cast_to<Viewport>(p_at)) {
		return; 
	}
	Control *c = Object::cast_to<Control>(p_at);
	if (c && c != this && c->get_focus_mode() == FOCUS_ALL && c->is_visible_in_tree()) {
		Point2 points[4];
		Transform2D xform = c->get_global_transform();
		points[0] = xform.xform(Point2());
		points[1] = xform.xform(Point2(c->get_size().x, 0));
		points[2] = xform.xform(c->get_size());
		points[3] = xform.xform(Point2(0, c->get_size().y));
		real_t min = 1e7;
		for (int i = 0; i < 4; i++) {
			real_t d = p_dir.dot(points[i]);
			if (d < min) {
				min = d;