Broken demo on Dynamic Component Loader documentation article

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Feature request
[x] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

The “live demo” and downloadable demo linked on the documentation page titled “Dynamic Component Loader” does not function, nor does the downloadable demo.

Expected behavior

The demo works

Minimal reproduction of the problem with instructions

Follow the “live example” link that shows at the top or bottom of the article here or go straight to live example link here

What is the motivation / use case for changing the behavior?

Demo is broken

Environment

Angular version: X.Y.Z


Browser:
- [x] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [x] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX
 
For Tooling issues:
- Node version: XX  
- Platform:  

Others:

[Yerkon]

@dankellett, Can you try this solution: #22020?

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