[llvm] [LTO] Run ObjCARCContractPass according to the callgraph (PR #103034)

[Jay Foad via llvm-commits]

jayfoad wrote:

I have no idea whether this makes sense for ObjC ARC contraction. My motivation was just to reduce the impact of #101114 on the pass pipeline.

https://github.com/llvm/llvm-project/pull/103034