webOS doesn't seem to support FLAC with more than 2 channels.
Split each video transcoding profile with FLAC so that the
containing FLAC is only applied to 2 channels audio.
These events are already handled by MediaSession. On some operating systems, like Windows, the browser will send both the MediaSession event and the keydown event to the webpage, causing the event to be handled twice and resulting in issues.
The previous check was too naive, assuming that most browsers that support playing MP3 directly in an mp4 file can support MP3 with HLS. However, this assumption is wrong. In fact, most browsers won’t play MP3 with HLS, with Safari being the only exception. Even on Safari, MP3 support with HLS is limited to the mpegts container, and it won’t play MP3 in the fmp4 container.
Fixes
```
System.FormatException: AudioInfo is not a valid value for ItemFields.
---> System.ArgumentException: Requested value 'AudioInfo' was not found.
at System.Enum.TryParseByName[TStorage](RuntimeType enumType, ReadOnlySpan`1 value, Boolean ignoreCase, Boolean throwOnFailure, TStorage& result)
at System.Enum.TryParseByValueOrName[TUnderlying,TStorage](RuntimeType enumType, ReadOnlySpan`1 value, Boolean ignoreCase, Boolean throwOnFailure, TUnderlying& result)
at System.Enum.TryParse(Type enumType, ReadOnlySpan`1 value, Boolean ignoreCase, Boolean throwOnFailure, Object& result)
at System.ComponentModel.EnumConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
--- End of inner exception stack trace ---
at System.ComponentModel.EnumConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
at Jellyfin.Api.ModelBinders.CommaDelimitedArrayModelBinder.GetParsedResult(IReadOnlyList`1 values, Type elementType, TypeConverter converter) in /home/bond/dev/jellyfin/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs:line 67
```
The current container setting was set 4 years ago and does not reflect current browsers. We should prioritize using fmp4 when possible and fallback to mpegts if necessary.
