[Regression] Edits after first system cause additional space to accumulate between systems
Reported by @S. Christian Collins on Telegram. Enter notes into the third system of the attached score (any score with a full first page, I think) and watch space start being added after the first system.
Must be due to my PR https://github.com/musescore/MuseScore/pull/4949. I think I must not be re-initializing the distance below first staff between layouts. Should be a one liner once I find it...