Consume core updates: Alert and Hint

[andrew-ronaldson]

Follow up to Core Alert issue

### Tasks
- [ ] https://github.com/patternfly/patternfly-react/issues/9810
- [ ] https://github.com/patternfly/patternfly-react/issues/9807

[evwilkin]

Closing as all issues are complete - no changes needed so no PRs to link.