When using `[positional-arguments]`, "$@" is not expanded in a command's echo

Say I have a task

```
[positional-arguments]
run *args:
scala-cli run . -- "$@"
```

When i run this task with

`just run --myflag myarg`

I get the output

**`scala-cli run . -- "$@"`**
`...`

However it would be more helpful to have echoed the real positional arguments I had provide, i.e.:

**`scala-cli run . -- --myflag myarg`**
`...`