Native client crashes when referencing widget excluded from layout

[cpetrov]

Problem description

When referencing a widget excluded from the layout, the native iOS client crashes.

Expected behavior

When an edge references a widget that is excluded from layout, it should fall back to 0, similarly to what happens when the referenced widget is not appended to the widget tree at all.

Environment

• Tabris.js version: 3.8, nightly
• OS: iOS

Code snippet

import {Composite, contentView} from 'tabris';

contentView.append(
  <$>
    <Composite left top right='#box' height={50} background='red' />
    <Composite id='box' right top height={50} width={50} background='blue' excludeFromLayout />
  </$>
);