[clang] [LifetimeSafety] Add origin tracking for lambda captures (PR #185216)

[Utkarsh Saxena via cfe-commits]

usx95 wrote:

@Xazax-hun Do you have examples where this is imprecise as compared to having multiple origins per captured entity. I am piggy bagging that the captured variables do not change at least in a way that now prevents a UAF.

https://github.com/llvm/llvm-project/pull/185216