How to render empty staves in CLI pdf export?

Hello friends,

I'm attempting to script MuseScore 4 to convert musicxml files to pdf via the Linux command line, eg:

mscore --score-parts-pdf ./foo.musicxml | jq -r .fullScoreBin | base64 --decode | base64 --decode > foo.pdf

(duplicate base64 call is because of issue #27531)

Unfortunately, MuseScore 4 automatically hides empty staves on import/export, and I would like them to always be shown in the resulting pdfs.

Is there a way to override this setting, either by passing a CLI option, editing a config file, or some other way?

The example I'm using is this musicxml file, taken from the MusicXML example sets

Finally, a feature request, I believe that when importing any file that isn't .mscz/.mscx, empty staves should never be hidden by default.

Thanks in advance!