Playing to MIDI plays all the staves despite the selected staves

[lgvr123]

Issue type

General playback bug

Bug description

When I select a part of my score and play it, the normal behaviour is that it plays only the selected part.

This is not the case with MID I output: all the staves are played.

Steps to reproduce

1. Open a multi-staves score
2. Configure MU4 to play to a MIDI output
3. Select a measure from one staff
4. Play it

Expected: Only the selected measure/staff is played

Actual; All the staff are played

Screenshots/Screen recordings

See https://musescore.com/user/36377501/scores/11363188/s/7jiuxK

MuseScore Version

4.0.2

Regression

No.

Operating system

Windows 10

Additional context

OS: Windows 10 Version 2009, Arch.: x86_64, MuseScore version (64-bit): 4.0.2-230651553, revision: github-musescore-musescore-dbe7c6d