### 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(nullptr);
	Control *from = const_cast<Control *>(this);
	while (true) {
		
		if (!data.focus_next.is_empty()) {
			Node *n = get_node_or_null(data.focus_next);
			ERR_FAIL_NULL_V_MSG(n, nullptr, "Next focus node path is invalid: '" + data.focus_next + "'.");
			Control *c = Object::cast_to<Control>(n);
			ERR_FAIL_NULL_V_MSG(c, nullptr, "Next focus node is not a control: '" + n->get_name() + "'.");
			if (c->is_visible() && c->get_focus_mode() != FOCUS_NONE) {
				return c;
			}
		}
		
		Control *next_child = nullptr;
		for (int i = 0; i < from->get_child_count(); i++) {
			Control *c = Object::cast_to<Control>(from->get_child(i));
			if (!c || !c->is_visible_in_tree() || c->is_set_as_top_level()) {
				continue;
			}
			next_child = c;
			break;
		}
		if (!next_child) {
			next_child = _next_control(from);
			if (!next_child) {