[clang] [clang] Emit nuw GEPs for array subscript expressions (PR #103088)

[Hari Limaye via cfe-commits]

hazzlim wrote:

> Can this be closed in favor of #105496?

Yes good point - will close this and open a PR to Reland #105496.

https://github.com/llvm/llvm-project/pull/103088