Compass - update demos to use unified tabs

**Describe the feature**
After https://github.com/patternfly/patternfly/issues/8015, Compass demos should be evaluated and any redundant styling should be removed (new Tabs styling should be very close to custom Compass styling for Tabs).

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**Jira Issue:** [PF-3498](https://redhat.atlassian.net/browse/PF-3498)