Balked (involuntary) landings have been part of the training curriculum at every airline I've been with since the 1970's. However the go-around was called by either the instructor or examiner.
During ground school the subject is addressed as to why a pilot would inititiate a go-around for reasons other than "the old truck on the runway!" alert or "oops... what happened to the runway lights?"
Wonder if there will be a reacquaintance with the dreaded balked landing procedures during future RST's? Perhaps not a bad idea.