FEATURE: load hidden posts in segments (PR #10240)

Currently, when “View hidden replies” button is clicked, all replies are loaded like there is no tomorrow. When there is plenty of hidden replies, it may cause a timeout.

Therefore, we should load them in pages and display the view link as long as we have more hidden replies.


Curious why you didn’t do: this.get("gaps.before")[postId] = tailGap ?