MuseScore 4 not properly playing back soundfonts with filter cutoffs

Issue type

General playback bug

Bug description

It seems that .sf3 files being played in MuseScore 4 are not utilizing the filter cutoffs that are specified in the .sf3 file. There's only a handful of sounds in Muse Sounds.sf3 that have particularly noticeable filters (most instruments' filters are in the 5,000 Hz+ range) so there's only a few where this is particularly obvious, most of which are synth pads. This is very noticeable with the star/sci-fi synth preset, though I'm sure there are others that are affected by this as well.

Steps to reproduce

1. Use one of the sounds in MS Basic with a cutoff filter. There are many of these but this will only be particularly noticeable with some of the synth sounds (sci-fi synth is very noticeable)
2. Use playback with this sound

Screenshots/Screen recordings

MuseScore 4.1 Playback:

Kooha-2023-09-23-15-26-51.webm

MuseScore 3.6.2 Playback with the same soundfont:

Kooha-2023-09-23-15-29-34.webm

Polyphone playback with the same soundfont with and without a filter on the saw stack instrument. Compare the test without the filter on the saw stack instrument to MuseScore 4's playback:

Kooha-2023-09-23-15-33-07.webm

MuseScore Version

4.1

Regression

Yes, this used to work in MuseScore 3.x and now is broken

Operating system

Fedora Linux 38

Additional context

No response