bpo-45011: Fix test_asyncio without C module _asyncio (GH-27968) Co-authored-by: Ćukasz Langa <lukasz@langa.pl> (cherry picked from commit 7dc505b8655b3e48b93a4274dfd26e5856d9c64f) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>