[3.11] GH-89237: fix hang in proactor `subprocess.wait_closed()` (GH-98572) (#98620)

GH-89237: fix hang in proactor `subprocess.wait_closed()` (GH-98572)
(cherry picked from commit ad1dc3ebb6aadaeeeacde13d4ed2d62bf302bf62)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>