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.

[#3]

Anna, thank you for the note. The problem with the edit feature is that it doesn't send a notification to the comment recipients that your comment has been edited, so important info can be lost. Our org relies heavily on comment email notifications for reading comments and may not go into the job/discover the edit. With the undo feature, you have a specific window before the email notification is sent and you know the recipient will receive the correct message in their email notification. This is the main reason why I have not permanently adopted comment beta even though separating comments and system updates is a great feature. 

[#4]

Thank you for the additional context!

We were considering sending emails for the edits as well, but we decided against it, so that we don't send duplicate emails if someone let's say made a simple typo. 

How frequent are the cases where the edit results in conceptual changes of the comment content?