Nested tree not load async nodes with AOT #10437

Bug, feature request, or proposal:

Bug

What is the expected behavior?

Building the app with aot and click item icon, it will load children and update view with children of the node.

What is the current behavior?

Building the app with aot and click item icon, it will load children and not show children of the node.

What are the steps to reproduce?

• Clone the repo: https://github.com/DocLM/nested-tree-example
• Install dependencies
• Run with ng serve --aot
• Open the page and click on the > icon.

Live example (here it work): https://stackblitz.com/edit/angular-olseyg

What is the use-case or motivation for changing an existing behavior?

It work without aot and not work with aot

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Browsers: Chrome 65 on MacOS 10.13.3
Material: 6.0.0-beta.4
Angular: 6.0.0-beta.7 (also tested with 5)
Typescript: ~2.5.3