Merge pull request #60379 from cbodley/wip-librados-cancellation

librados/asio: forward asio cancellations to AioCompletion::cancel()

Reviewed-by: Adam Emerson <aemerson@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>

diff --cc PendingReleaseNotes
Simple merge

diff --cc src/test/librados/aio_cxx.cc
Simple merge