Add audio metadata to "best" format

[MarkimusZer0]

bug description
I believe it's a bug, but downloading files (at least from YouTube) with the audio format set to best will cause them to come out without metadata

reproduction steps
steps to reproduce the behavior:

1. Have audio format set to best
2. Download any video as an audio
3. See error

videos

screen-20240317-105235.mp4

screen-20240317-105338.mp4

platform

• OS: Android 11
• Chrome
• Cobalt V.7.11

additional context
add any other context about the problem here.

[wukko]

this is expected behaviour because file is not modified by the processing server in any way. but i will convert this into a feature request :D