[clang] [Clang] Add support for scalable vectors in __builtin_reduce_* functions (PR #87750)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

Given there isn't any target-independent way to construct such a type, it feels sort of redundant.  (A user could easily implement this themselves.)  But I can't think of a reason to avoid adding this.

Please update documentation and add a release note.

https://github.com/llvm/llvm-project/pull/87750