Reloading of page after in page reply loses read tracking highlights

This is a regression caused by MDL-74121

Per sujith's fix / notes - the inpage_reply.js was updated / changed to now reload the page after a post - on page re-load the read tracking highlights disappear.

Previously in line / in page reply's would post and not re-load the page keeping the highlights on the page.

This is useful for instructors / facilitators who need to reply to many posts in a forum.