### Godot version

4.1 stable, 4.1.1 rc1

### System information

Windows 10, Forward +

### Issue description

When updating the global_position of a Node2D that's outside of the scene tree, the global_position does not update. I came across this issue because when I instantiate a scene, I usually set the instantiated object's properties before adding it to the scene tree. When I tried setting the global_position, I noticed the value seems to stay at (0,0). Interestingly, even though the global_position does not update, the position property does. Is it fine to update a node's (global) position when it's not inside the scene tree? Or should we not do this

Also possibly related to #75676

### Steps to reproduce

```gdscript
extends Node

func _ready() -> void:
	var a = Node2D.new()
	a.global_position = Vector2(1, 1)
	assert(a.global_position == Vector2(1, 1))
```

The above assertion fails on 4.1 stable and 4.1.1 rc1, but succeeds on 4.0.2 and 4.0.3. I didn't test other versions besides these

### Minimal reproduction project

N/A
ERR_READ_THREAD_GUARD_V(false);
	return z_relative;
}
int CanvasItem::get_z_index() const {
	ERR_READ_THREAD_GUARD_V(0);
	return z_index;
}
int CanvasItem::get_effective_z_index() const {
	ERR_READ_THREAD_GUARD_V(0);
	int effective_z_index = z_index;
	if (is_z_relative()) {
		CanvasItem *p = get_parent_item();
		if (p) {
			effective_z_index += p->get_effective_z_index();
		}
	}
	return effective_z_index;
}
void CanvasItem::set_y_sort_enabled(bool p_enabled) {
	ERR_THREAD_GUARD;
	y_sort_enabled = p_enabled;
	RS::get_singleton()->canvas_item_set_sort_children_by_y(canvas_item, y_sort_enabled);
}
bool CanvasItem::is_y_sort_enabled() const {
	ERR_READ_THREAD_GUARD_V(false);
	return y_sort_enabled;
}
void CanvasItem::draw_dashed_line(const Point2 &p_from, const Point2 &p_to, const Color &p_color, real_t p_width, real_t p_dash, bool p_aligned) {