[llvm] [InstCombine] Fix missing argument typo in `InstCombinerImpl::foldICmpShlConstant` (PR #94899)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> I didn't even notice that #92773 also made changes to flag preservation -- it seems like that part of the PR was untested? At least I don't see any trunc nuw/nsw in the tests. Can you please add coverage?

Done.


https://github.com/llvm/llvm-project/pull/94899