[clang] [CIR] Implement support for delete after new in a conditional branch (PR #192544)

[Erich Keane via cfe-commits]

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

Would love hte simplification of save/restore if it works well enough, either way LGTM.

https://github.com/llvm/llvm-project/pull/192544