The percussion panel does not appear when piano keyboard is in view

Issue type

UI bug (incorrect info or interface appearance)

Description with steps to reproduce

1. Open/create a score with a percussion staff, open the piano keyboard panel
2. Make sure that the "Use legacy percussion panel" setting is deactivated in the program settings
3. On the percussion staff, select a note, rest, or highlight the percussion staff itself
4. The percussion panel will not appear

https://github.com/user-attachments/assets/e05a44b2-3b17-4472-b23e-52c71002d983

Supporting files, videos and screenshots

See above

What is the latest version of MuseScore Studio where this issue is present?

4.5.2 251141402, revision: ac9d3bc

Regression

I was unable to check

Operating system

Windows 11

Additional context

The percussion panel will appear if I switch either from MS Basic to MuseSounds or from MuseSounds to MS Basic.

This behaviour was intentionally introduced with #26807 as a means of resolving #23676, but the logic could probably be smarter.

https://github.com/user-attachments/assets/b812c930-0238-420c-aa75-c0d21d07520a

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