Follow-up to the salvaged #62026 ownership fix, folding in #72054's
CancelledError rule by @adurham: start() already cancels/reaps its own
run task when the caller's connect timeout cancels start() itself, so
_connect_server() must propagate cancellation without awaiting a
redundant shutdown() inside a cancelled context. Non-cancellation
failures on the unclaimed (standalone probe) path still reap the parked
task, now with the reap failure logged instead of raising over the real
error.
Also maps mrz@mrzlab630.pw for the attribution check.
Co-authored-by: Adam Durham <amdnative@gmail.com>
