"Hook heigth" for Voltas in general settings doesn't change
Steps to reproduce:
1. Insert a Volta
2. Open Style->General...
3. Change the value of hook height
Expected result: hook height change to the new value
actual result: hook height doesn't change to the new value
The same works as expected for ottava lines
see also: https://musescore.org/en/node/188291
For master (4b4a3df) it doesn't work for booth.