Fix pgm change pre-send potential miss

Relates to this comment: https://github.com/jackpf/performer/commit/dc5c60ec8ed2eaf57cfb2160788475bda9fa8906

Could be fixed by always sending pgm change on the actual tick as well (but will result in 2 pgm change messages).
Or better logic, somehow work out if the first one was missed, send the second.