Fretboard diagrams don't respect the setting for Chord symbols Capo fret position

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

1. Input a chord symbol, eg. C
2. Add a chord diagram for the created chord symbol
3. Go to Style settings > Chord symbols > Capo
4. Set Capo: Show transposed symbols only (not relevant to bug, but helps observe the effect)
5. Set Capo fret position: 1

Observed behavior: The chord symbol is correctly shown as B, but the chord diagram still represents the original C chord instead of the transposed B chord.

Expected behavior: The fretboard diagram should always represent the transposed chord, not the original chord.

Note: there's no difference whether you add the fretboard diagram to a chord symbol before or after adjusting capo settings, the result is the same in either case.

Supporting files, videos and screenshots

Bug: "C" chord with Capo fret position = 1, correctly showing "B" as the transposed chord symbol, but incorrectly showing the fretboard diagram for the "C" chord instead of "B".

Expected behavior: "C" chord with Capo fret position = 1, showing "B" as the transposed chord symbol, showing the fretboard diagram for the capoed "B" chord.

In which versions of MuseScore Studio is this issue present?

4.7.4

Regression

No.

Operating system

Windows 11

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible