[llvm] [SimplifyIndVar] Push more users to worklist for simplifyUsers (PR #93598)

[via llvm-commits]

v01dXYZ wrote:

I want to add another point to the ones mentioned by @efriedma-quic:

* the optimisations done in-loop are much more susceptible to improve the perf compared to out-of-loop. It's  more profitable compared to colder paths. It could be wiser to use a light version instead.

https://github.com/llvm/llvm-project/pull/93598