Memory leak with MuseSounds/MuseSampler

[DmitryArefiev]

Steps to reproduce

1. Open Task Manager (and watch MuseScore)
2. Open big score with MuseSounds (MS4SOUNDS_Beethoven__Symphony_No._9__Op._125.zip)
3. Playback, stop playback/start playback, start playback from beginning etc.
4. Observe RAM amount (it's growing)
5. Close score - RAM is not released as it should
6. Open score again - it takes more RAM than before

Screenshots/Screen recordings

https://github.com/musescore/MuseScore/assets/90187801/06273838-c46f-4613-9563-3b41a3dcb705

MuseScore Version

4.4

MuseSampler 0.6.3 (latest version from MuseHub)

Regression

Doesn't occur in 4.2.1 (with the same musesampler version)

Operating system

Windows10

Additional context

No response