Bug - Data list - demo errors with "Fragment is not defined"

[mcoker]

https://react-staging.patternfly.org/components/data-list/react-demos/expandable-control-in-toolbar/

Error is "ReferenceError: Fragment is not defined"

[tlabaj]

@thatblindgeye we should fix this before release.

[thatblindgeye]

Closing as resolved by #11679