fix #25281: handling of some slash chords
fix #25209 MusicXML reloads with measure actual as 1/1
Merge pull request #821 from lvinken/musicxml-fixes

fix #25209 MusicXML reloads with measure actual as 1/1
Merge pull request #820 from MarcSabatella/25281-slash-chords

fix #25281: handling of some slash chords