Alerts - update examples/demos to have animations enabled, update docs

[thatblindgeye]

Describe the enhancement or change
Followup to #11495, we should update our usage of Alerts and update docs to mention that opting into animations for Alerts may require test updates, and will require usage of Alerts to be updated so that newest alerts are prepended to an alerts list.

Is this request originating from a Red Hat product team? If so, which ones and is there any sort of deadline for this enhancement?

Any other information?