[clang] [Clang] Fix ICE when `initial_suspend()`'s `await_resume()` returns a non-trivially destructible type (PR #72935)

[Yuxuan Chen via cfe-commits]

yuxuanchen1997 wrote:

Deleting `memberCallExpressionCanThrow` should be ok. It has been buggy before (the statement wasn't even a `CXXMemberCallExp`).
It shouldn't matter if the init suspend await resume is noexcept or not. The old logic did not generate for case where the coro's exception handler wasn't there either. 

https://github.com/llvm/llvm-project/pull/72935