### 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)

ERR_READ_THREAD_GUARD_V(GROW_DIRECTION_BEGIN);
	return data.h_grow;
}
void Control::set_v_grow_direction(GrowDirection p_direction) {
	ERR_MAIN_THREAD_GUARD;
	if (data.v_grow == p_direction) {
		return;
	}
	ERR_FAIL_INDEX((int)p_direction, 3);
	data.v_grow = p_direction;
	_size_changed();
}
Control::GrowDirection Control::get_v_grow_direction() const {
	ERR_READ_THREAD_GUARD_V(GROW_DIRECTION_BEGIN);
	return data.v_grow;
}
void Control::_compute_anchors(Rect2 p_rect, const real_t p_offsets[4], real_t (&r_anchors)[4]) {
	Size2 parent_rect_size = get_parent_anchorable_rect().size;
	ERR_FAIL_COND(parent_rect_size.x == 0.0);
	ERR_FAIL_COND(parent_rect_size.y == 0.0);
	real_t x = p_rect.position.x;
	if (is_layout_rtl()) {
		x = parent_rect_size.x - x - p_rect.size.x;
	}
	r_anchors[0] = (x - p_offsets[0]) / parent_rect_size.x;
	r_anchors[1] = (p_rect.position.y - p_offsets[1]) / parent_rect_size.y;
	r_anchors[2] = (x + p_rect.size.x - p_offsets[2]) / parent_rect_size.x;
	r_anchors[3] = (p_rect.position.y + p_rect.size.y - p_offsets[3]) / parent_rect_size.y;
}
void Control::_compute_offsets(Rect2 p_rect, const real_t p_anchors[4], real_t (&r_offsets)[4]) {