### Godot version

f73cb4c13d1bc19b044fbef735522e3b0249e8ab

### System information

Windows 10, Vulkan

### Issue description

A CSGPolygon3D node with 'use_collision' on, in Path mode, with a path node assigned, throws the error "Node3D::get_global_transform: Condition "!is_inside_tree()" is true. Returning: Transform3D()" when running (and in some cases when switching scenes).

![image](https://user-images.githubusercontent.com/115422160/211907313-20742234-4a1f-4d94-b573-544b8e1d07ca.png)

~~In this same MRP you can also see a different error, when switching between scenes in the editor, that I've mentioned in https://github.com/godotengine/godot/issues/58869, I can open a separate issue if needed:~~
I've opened a separate issue for this in https://github.com/godotengine/godot/issues/71750.
![image](https://user-images.githubusercontent.com/115422160/211907528-1df7230e-6270-4669-bf44-2ef449eebf1d.png)



### Steps to reproduce

Run the MRP. It's a simple Node3D scene with a CSGPolygon3D and Path3D as children.

### Minimal reproduction project

[transform bug.zip](https://github.com/godotengine/godot/files/10395682/transform.bug.zip)

return node_aabb;
}
Vector<Vector3> CSGShape3D::get_brush_faces() {
	ERR_FAIL_COND_V(!is_inside_tree(), Vector<Vector3>());
	CSGBrush *b = _get_brush();
	if (!b) {
		return Vector<Vector3>();
	}
	Vector<Vector3> faces;
	int fc = b->faces.size();
	faces.resize(fc * 3);
	{
		Vector3 *w = faces.ptrw();
		for (int i = 0; i < fc; i++) {
			w[i * 3 + 0] = b->faces[i].vertices[0];
			w[i * 3 + 1] = b->faces[i].vertices[1];
			w[i * 3 + 2] = b->faces[i].vertices[2];
		}
	}
	return faces;
}
void CSGShape3D::_notification(int p_what) {