[clang] [NFC][Clang] Fix test constexpr-function-recovery-crash.cpp (PR #65269)

[Sam McCall via cfe-commits]

https://github.com/sam-mccall approved this pull request.

LGTM

I don't have a strong opinion about keeping the old even-more-broken versions. They're not very likely, and we don't attempt to cover most things like that. A fuzzer is probably a better approach (we have one, it finds an ~infinite number of crashes).

https://github.com/llvm/llvm-project/pull/65269