Issue 51229 - Server Settings page gets into an unresponsive state
Bug Description: If we switch the tab in Cockpit UI and restart
the instance - we can't go back to the default tab as it's in
an unresponsive loading state.
Fix Description: Do the update on ComponentDidUpdate instead of
ComponentDidMount.
https://pagure.io/389-ds-base/issue/51229
Reviewed by: mreynolds (Thanks!)