No longer downloads 5.1 (ac3) sound

Version

v1.13.3

Platform

Windows 11

Steps to reproduce

Download a youtube file confirmed to have 5.1 audio as an option: https://www.youtube.com/watch?v=Z4tFjmYeQl4

No matter which options selected, audio is returned as Stereo

Details

In the past, downloading as a WEBM would preserve the 5.1 AC3 audio, whereas now all options just return stereo tracks

Checklist

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