[llvm] [InstCombine] Fold its select user into select (PR #83405)

[via llvm-commits]

vfdff wrote:

> I think this should be a minor generalization of some existing simplifyWithOpReplaced or foldSelectValueEquivalence style fold.
Thanks, refactor with simplifyWithOpReplaced. （foldSelectValueEquivalence is used for **select + cmp**）


https://github.com/llvm/llvm-project/pull/83405