[clang] [codegen] Emit missing cleanups for stmt-expr and coro suspensions [take-2] (PR #85398)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

I didn't look too hard at the codegen bits, but the Expr bits look good to me. Perhaps we want this test to live in CodeGen rather than CodeGenCoroutines given that it covers so many non-coroutine test cases as well?

https://github.com/llvm/llvm-project/pull/85398