Allowed hiding demo code in `LiveExample` (#2350) #14316

Job	Run time
Zip and Upload files to Veracode	1m 0s
Install node modules	44s
Build website and playgrounds	3m 4s
Audit node modules	43s
Build and lint packages (ubuntu-latest)	1m 14s
Test for a11y violations	2m 49s
Build and lint packages (windows-latest)	2m 35s
Run e2e tests	3m 3s
Run unit tests	4m 1s
Run visual tests (css)	7m 49s
Run visual tests (react)	8m 45s
Push static files to github pages	1m 53s
	37m 40s

Provide feedback