[Discussions] Allow instructors to hide an inappropriate discussion post or a reply with the Report action

Problem statement:

One of my faculty deleted an inappropriate discussion post made by one of the students in her/his class. The next day, the faculty realized that s/he should have documented the reply in case s/he needs it as a proof in the future. However, there is no way to recover the deleted post. If a student !Report a discussion reply, the instructors can only edit or delete it to prevent the rest of class from reading it. The instructor can take a screenshot and delete it. But it would be better if the instructor can hide the reply from the rest of class.

Proposed solution:

It would be helpful to have an option that allows the instructor and the Admin to hide an offensive discussion post from the class.

User role(s):

admin,instructor