### 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)

Transform2D rot_scale;
	rot_scale.set_rotation_and_scale(data.rotation, data.scale);
	Transform2D offset;
	offset.set_origin(-data.pivot_offset);
	return offset.affine_inverse() * (rot_scale * offset);
}
void Control::_update_canvas_item_transform() {
	Transform2D xform = _get_internal_transform();
	xform[2] += get_position();
	
	if (is_inside_tree() && Math::abs(Math::sin(data.rotation * 4.0f)) < 0.00001f && get_viewport()->is_snap_controls_to_pixels_enabled()) {
		xform[2] = xform[2].round();
	}
	RenderingServer::get_singleton()->canvas_item_set_transform(get_canvas_item(), xform);
}
Transform2D Control::get_transform() const {
	ERR_READ_THREAD_GUARD_V(Transform2D());
	Transform2D xform = _get_internal_transform();
	xform[2] += get_position();
	return xform;
}
void Control::_top_level_changed_on_parent() {
	
	_notification(NOTIFICATION_EXIT_CANVAS);
	_notification(NOTIFICATION_ENTER_CANVAS);
}
void Control::_set_anchor(Side p_side, real_t p_anchor) {