[Bug]: Mise package completions only work for the first argument

[Jai-JAP]

When trying to install / use / uninstall multiple packages at once, mise <command> <tab> only works for completion of package name for the first position.

While the mise cli itself supports performing actions on multiple packages at once like a list of values, the completions are not generated for the later packages.

For instance

mise use <tab> # works, gives available completions

mise use pkg1 <tab> # doesn't work for 2nd and later positions.

This might be the case for some other commands that accept an list of values but I have currently only encountered this with completing packages.