Setting scale of a control node inside of a container doesn't work if set immediately

### Tested versions

- Reproducible in v4.4.dev3.mono.official

### System information

v4.4.dev3.mono.official [f4af8201b]

### Issue description

When control node is contained by a container (eg. `VBoxContainer`) and its scale is set immediately after node's creation, the scale value doesn't have any effect. If the scale is set afterwards or it is set using a tween with 0 second duration, the scale works as expected.

### Steps to reproduce

Scene:

Code:
```gdscript
extends Node2D

@onready var label: Label = $VBoxContainer/Label
@onready var v_box_container: VBoxContainer = $VBoxContainer

var label_2

func _ready() -> void:
# this doesn't work:
label.scale = Vector2(0.4, 1.0)

label_2 = Label.new()
v_box_container.add_child(label_2)
label_2.text = "Another label with some text"
# this doesn't work:
label_2.scale = Vector2(1.0, 2.0)

# setting scale using a tween with zero duration works:
#create_tween().tween_property(label, "scale", Vector2(0.4, 1.0), 0.0)
#create_tween().tween_property(label_2, "scale", Vector2(1.0, 2.0), 0.0)

func _on_button_pressed() -> void:
# this works:
label.scale = Vector2(0.4, 1.0)
label_2.scale = Vector2(1.0, 2.0)
```

If the button is clicked or if the two `create_tween()` lines are uncommented, scales are working as expected.

### Minimal reproduction project (MRP)

[scale_test.zip](https://github.com/user-attachments/files/17376934/scale_test.zip)

Start with the linked scale_test.zip minimal reproduction and follow the _ready() assignments for the existing Label and dynamically added Label inside the VBoxContainer. Compare those results with the button callback and zero-duration tween cases; done means both initial scale assignments visibly take effect without requiring a later callback or tween.

Written by the indexing model from the issue text.