`just --usage` and `just --show` can not follow module path.

I am using `set unstable` so thing can be a bit too out of scoped.. but there is this minor inconvenience when I'm trying to explore command: ```sh > just --usage b alias b := build Usage: just b > just --usage ../b error: invalid module path `../b` ``` Same with `--show` flag. Can we make them follow module path if we `set unstable`? ## Reproduce - At current working dir. ```just set unstable set fallback alias b := build build: # anything here ``` - Parent dir ```just set unstable set fallback alias b := build build: # different thing. ```