Move copy discussion logic to the comment manager

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.2.10 DXP FP2, 7.2.10.1 DXP SP1, 7.2.X, Master
• Component/s: Collaboration > Comments
• Labels:
  • liferay-dxp-72-sp1
  • liferay-fixpack-dxp-2-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Sprint: 032 - Nidoran
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/77560

With the current fix for LPS-99643 we are exposing the internals of CommentManager (using Message Boards classes).

Since the comment manager API is independent from message boards and could be using a different implementation we should hide the details by adding a copyDiscussion method to the comment manager.