Audio mixer assets are using the wrong icons in Search

Steps to reproduce:

1. Create and open an empty project.
2. Create an audio mixer asset (Assets > Create > Audio > Audio Mixer).
3. Open the Search window.
4. Type in "mixer" in the search bar to show the mixer assets.

Actual results: They are all using the mixer icon. on U6, they jump between icons (see screen recording).

Expected results: The mixer snapshots and mixer groups should be using their respective icons.

Reproducible with versions:
6000.0.5f1
2022.3.31f1
2021.3.39f1

Tested on (OS): MacOS (M1) 14.4.1