Exporting .m4a file with ALAC codec

I am using the latest mac version of Audacity (version 3.1.3) and have successfully installed the ffmpeg extensions which allow me to directly export .m4a (AAC) files, but I cannot find a way to export .m4a (ALAC) files, which are used by Apple Music for lossless audio. I tried the custom ffmpeg export function, but there is no m4a format shown, although there is alac code option available, but only for a few other file formats, like .mov.

Is there a way to force manual ffmpeg export like there was for Audacity 3.0.2:
/Applications/FFmpeg_for_Audacity_on_OSX/ffmpeg -i - -acodec alac “%f”

Thanks… any help appreciated.