Revert https://github.com/compiler-research/xeus-cpp/pull/349 (keeping test) #350
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Description
Please include a summary of changes, motivation and context for this PR.
Fixes # (issue)
Currently CppInterOps Emscripten ci is broken to #349 for MacOS arm for llvm, as can be seen here https://github.com/compiler-research/CppInterOp/actions/runs/15633230695 .
The test itself passes in these circumstances with the old get_stdopt as can be seen here compiler-research/CppInterOp#632 . Therefore this PR suggests reverting get_stdopt while keeping the test
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