Toggling visibility of first notehead in tuplet also toggles the tuplet number's visibility

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

1. New score
2. Select a rest, and add any tuplet
3. Inside the tuplet, put at least one note on the very start of the tuplet (i.e. the first thing inside the tuplet bracket should be a note, not a rest)
4. Select the head of that first note and press V to toggle visibility of the notehead
5. Notice that the tuplet number also becomes invisible even though it wasn't selected, and so does the bracket (if applicable)

Alternatively:

1. Set up a tuplet as described above in steps 1-3
2. Select the tuplet number and press V to make it invisible
3. Select the head of the first note and press V twice
4. The tuplet number has become visible again

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/fce093ae-3fc2-4350-8068-403c2edffe12

In which versions of MuseScore Studio is this issue present?

OS: Ubuntu 25.10, Arch.: x86_64, MuseScore Studio version (64-bit): 4.6.5-253511702, revision: github-musescore-musescore-653f38d

Regression

I was unable to check

Operating system

Kubuntu 25.10

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

Reproduce the issue in a new score using the described tuplet, first-notehead selection, and V shortcut steps. Trace the tuplet, notehead, number, and bracket visibility handling from that interaction; done means toggling the first notehead leaves the unselected tuplet number and bracket unchanged, with coverage for both visibility directions.