[clang] [[clang::always-destroy]] attribute silences warn-exit-time-destructor (PR #86486)

[via cfe-commits]

ycdtosa wrote:

@AaronBallman I finally got some time to prepare this PR, but I am not familiar with the approval process.
It also seems that you have commit rights, so there!

Still, I fell the test might be incomplete.

https://github.com/llvm/llvm-project/pull/86486