refactor(hydro_deploy): use a hash intead of nanoid to make build output names unique

[MingweiSamuel]

hydro_deploy/core/src/hydroflow_crate/build.rs

          Eventually we should probably use a hash; nanoid is a pretty hacky solution since we could even have collisions.

Originally posted by @shadaj in https://github.com/hydro-project/hydroflow/pull/1334#discussion_r1676225033