[clang] [clang-repl] Skip tests for non-linux and non-darwin platforms from #152562 (PR #153005)

[Abhinav Kumar via cfe-commits]

kr-2003 wrote:

I understand your concern about the fragility of the check and the hardcoded assumptions in ``getOrcRuntimePath``. 
In this case, though, the feature under test is explicitly implemented only for linux-x86_64 and macOS/Darwin. Because of this, I think it’s important to still run the test on these supported platforms.

https://github.com/llvm/llvm-project/pull/153005