[llvm] [MemProf] Don't skip direct recursion in function summary (PR #78264)

[via llvm-commits]

lifengxiang1025 wrote:

I'm not sure why we treat direct recursion specially. Why don't we treat all recursion in the same way？For example:
foo->foo->foo
foo->bar->foo->bar


https://github.com/llvm/llvm-project/pull/78264