[llvm] [llvm] Fix SupportHTTP linkage with libLLVM in unit-tests (PR #190097)

[Ramkumar Ramachandra via llvm-commits]

https://github.com/artagnon commented:

I think the CI is failing? I'm no expert on CMake, so I'm afraid I don't know what's wrong?

https://github.com/llvm/llvm-project/pull/190097