[clang] [LifetimeSafety] Track origins for lifetimebound calls returning record types (PR #187917)

[Gábor Horváth via cfe-commits]

https://github.com/Xazax-hun commented:

Overall, I think this is shaping up nicely but I have some comments inline. 

https://github.com/llvm/llvm-project/pull/187917