[Chapel Merge] Properly wire llvm and c configs for CHAMPS nightl

Branch: refs/heads/main
Revision: 3e9293b
Author: e-kayrakli
Link: Properly wire llvm and c configs for CHAMPS nightly testing by e-kayrakli · Pull Request #19100 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #19100 from e-kayrakli/champs-nightly-fixes-2

Properly wire llvm and c configs for CHAMPS nightly testing

This PR adjusts CHAMPS testing to be able to plot both llvm
and c-backend configs.

I tested the branch manually on jenkins.

[Reviewed by @ronawho]

Modified Files:
M test/studies/champs/functions.bash

M test/studies/champs/sub_test

Compare: https://github.com/chapel-lang/chapel/compare/26f5a70d4272...3e9293b29edb