[Guitar] Offsets in text styles don't work for Let-ring and Palm mute

[abariska]

Steps:

1. Create a score with guitar
2. Add some notes and apply Palm mute/Let ring element
3. Go to the Styles > Text styles > Palm mute/Le tring
4. Try to change offsets

Screencast:

abariska.2024-11-20.at.18.45.23.mp4

Expected result:
The offsets changes are reflected on the score