[clang] [LifetimeSafety] Allow user-defined structs to have origins (PR #189240)

[Utkarsh Saxena via cfe-commits]

usx95 wrote:

Thanks for working on this. Unfortunately this overlaps with https://github.com/llvm/llvm-project/issues/184344 and we are planning to move to TreeOrigins to address this.

https://github.com/llvm/llvm-project/pull/189240