Stave spacer up not working when upper instruments are hidden

[spscores]

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

1. Create a score with multiple staves
2. Select "Hide empty staves within systems"
3. Find a system where the first visible staff is not actually the first of the piece, because one or more over it are empty and therefore hidden
4. Add a stave spacer up
5. Extending it up won't stop to the page or the page margin, and therefor won't move the system down as wanted

• Please note that the problem doesn't appear in the opposite direction – with lower staves hidden and staff spacer dows, which correctly stop at page margins allowing the system to be moved up

Supporting files, videos and screenshots

Uncorrect behaviour with the hidden upper staves:

Correct behaviour with hidden lower staves:

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

4.4 (also 4.5 beta)

Regression

No (same back to at least 3.6)

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