Bug - Alert - React example page has horizontal scroll on mobile

[srambach]

Describe the problem
On the Alerts React page, some examples have buttons that do not wrap, causing the page to have a horizontal scroll at mobile widths.

How do you reproduce the problem?
Go to https://www.patternfly.org/components/alert and make your screen narrow.

Expected behavior
These buttons are contained in an input group, which doesn't wrap. A flex container would probably be better.

Screenshots