addprocs does not activate workers in current project

[andrew-saydjari]

As far as I understand it/have tested, after version 1.9, addprocs(n) creates workers in the same environment as the main process (see JuliaLang/julia#49003). However, addprocs(SlurmManager()) does not seem to do so. This is a problem because activating a project the "old-fashioned way" on new workers takes 10x longer in Julia 1.9+.

[kleinhenz]

I just merged #30 which should address this. Thanks @DilumAluthge! Does this resolve the issue?