[llvm] [LV] Support binary and unary operations with EVL-vectorization (PR #93854)

[Kolya Panchenko via llvm-commits]

nikolaypanchenko wrote:

> I've fixed an unused variable warning from this PR with [ce192b8](https://github.com/llvm/llvm-project/commit/ce192b87b2a09ee27e4077763db0486921a485c0).

thanks. I'll double check why I missed it in the first place

https://github.com/llvm/llvm-project/pull/93854