[clang] [llvm] [clang] Polymorphic Cleanup type is moved despite not being POD types (PR #156607)

[Erich Keane via llvm-commits]

https://github.com/erichkeane approved this pull request.

Not really sure I get the motivation/what is happening here, but I don't know if there is a better person to review?  Perhaps @efriedma-quic can give it a quick double-check as well?

https://github.com/llvm/llvm-project/pull/156607