### 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)

ClassDB::bind_method(D_METHOD("get_focus_mode"), &Control::get_focus_mode);
	ClassDB::bind_method(D_METHOD("has_focus"), &Control::has_focus);
	ClassDB::bind_method(D_METHOD("grab_focus"), &Control::grab_focus);
	ClassDB::bind_method(D_METHOD("release_focus"), &Control::release_focus);
	ClassDB::bind_method(D_METHOD("find_prev_valid_focus"), &Control::find_prev_valid_focus);
	ClassDB::bind_method(D_METHOD("find_next_valid_focus"), &Control::find_next_valid_focus);
	ClassDB::bind_method(D_METHOD("set_h_size_flags", "flags"), &Control::set_h_size_flags);
	ClassDB::bind_method(D_METHOD("get_h_size_flags"), &Control::get_h_size_flags);
	ClassDB::bind_method(D_METHOD("set_stretch_ratio", "ratio"), &Control::set_stretch_ratio);
	ClassDB::bind_method(D_METHOD("get_stretch_ratio"), &Control::get_stretch_ratio);
	ClassDB::bind_method(D_METHOD("set_v_size_flags", "flags"), &Control::set_v_size_flags);
	ClassDB::bind_method(D_METHOD("get_v_size_flags"), &Control::get_v_size_flags);
	ClassDB::bind_method(D_METHOD("set_theme", "theme"), &Control::set_theme);
	ClassDB::bind_method(D_METHOD("get_theme"), &Control::get_theme);
	ClassDB::bind_method(D_METHOD("set_theme_type_variation", "theme_type"), &Control::set_theme_type_variation);
	ClassDB::bind_method(D_METHOD("get_theme_type_variation"), &Control::get_theme_type_variation);
	ClassDB::bind_method(D_METHOD("begin_bulk_theme_override"), &Control::begin_bulk_theme_override);
	ClassDB::bind_method(D_METHOD("end_bulk_theme_override"), &Control::end_bulk_theme_override);
	ClassDB::bind_method(D_METHOD("add_theme_icon_override", "name", "texture"), &Control::add_theme_icon_override);
	ClassDB::bind_method(D_METHOD("add_theme_stylebox_override", "name", "stylebox"), &Control::add_theme_style_override);
	ClassDB::bind_method(D_METHOD("add_theme_font_override", "name", "font"), &Control::add_theme_font_override);
	ClassDB::bind_method(D_METHOD("add_theme_font_size_override", "name", "font_size"), &Control::add_theme_font_size_override);
	ClassDB::bind_method(D_METHOD("add_theme_color_override", "name", "color"), &Control::add_theme_color_override);
	ClassDB::bind_method(D_METHOD("add_theme_constant_override", "name", "constant"), &Control::add_theme_constant_override);
	ClassDB::bind_method(D_METHOD("remove_theme_icon_override", "name"), &Control::remove_theme_icon_override);
	ClassDB::bind_method(D_METHOD("remove_theme_stylebox_override", "name"), &Control::remove_theme_style_override);
	ClassDB::bind_method(D_METHOD("remove_theme_font_override", "name"), &Control::remove_theme_font_override);
	ClassDB::bind_method(D_METHOD("remove_theme_font_size_override", "name"), &Control::remove_theme_font_size_override);
	ClassDB::bind_method(D_METHOD("remove_theme_color_override", "name"), &Control::remove_theme_color_override);
	ClassDB::bind_method(D_METHOD("remove_theme_constant_override", "name"), &Control::remove_theme_constant_override);