[clang] [llvm] Enable running ClangReplInterpreterTests in an Emscripten environment (PR #150977)

[Anutosh Bhat via llvm-commits]

anutosh491 wrote:

Would also probably make sense to add a very simple "Fix me" comment isn't it ? (skipping them as such conveys that those particular tests probably shouldn't work for emscripten)

https://github.com/llvm/llvm-project/pull/150977