[llvm] [Reland] [CGData] Lazy loading support for stable function map (PR #154491)

[Zhaoxuan Jiang via llvm-commits]

nocchijiang wrote:

@nico I wasn't able to reproduce the failed build locally, so I just add the missing include.

@kyulee-com Could you please help land the patch (and potentially revert it again, which I hope it does not happen)?

https://github.com/llvm/llvm-project/pull/154491