Alert - remove hasAnimations prop during breaking change

[thatblindgeye]

Describe the enhancement or change
Followup to animations PR #11495 where hasAnimations was added as beta, with the intent being it'd be used for testing purposes only. In the next breaking change we would expect consumers to update tests to reflect animations within an AlertGroup and should remove the prop.

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?