fix #32651: Naturals should not be shown at system break
Merge pull request #1324 from CombatCube/32651-naturals-system-break

fix #32651: Key signature at system break with canceling naturals should not repeat naturals at beginning of following system
fix #23137: Beam of small chord aren't small
fix #32591: Stems too long on beamed grace notes
fix #40091: double flat/sharp in chord symbols
add double flat/sharp to MuseJazz
use same version of MuseJazz on all platforms