Add undo button to the comment beta feature

[#1]

Description - Add the undo button like we currently have in the comment feature to the beta comment feature

Why is this feature important to you - we constantly use undo to correct/revise comments

How would you like the feature to work - the beta feature should also have the undo button

Current Behaviour - There's currently no way to undo the comment in beta. 

[#2]

Hi @AndrilitaRo1 ,

We have replaced the Undo functionality from the current commenting with the ability to edit comments. You should be able to access it from the comment actions for the 15 min after the comment has been posted.

Let me know if you have any additional questions.