[llvm] [llvm/IR] Fix module build issue following e57308b063bb (NFC) (PR #94580)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

This is not the right place for the include, as Constant.h does not even use GEPNoWrapFlags.

In which header does the module build report a problem?

https://github.com/llvm/llvm-project/pull/94580