[clang] [clang] Expose -f(no-)strict-overflow as a clang-cl option (PR #126512)

[Hans Wennborg via cfe-commits]

https://github.com/zmodem approved this pull request.

lg

> Previously: #120787

That one landed before the 20 branch point, and this will land after. Maybe we should ask to have it back-ported.

https://github.com/llvm/llvm-project/pull/126512