bpo-44963: Implement send() and throw() methods for anext_awaitable objects (GH-27955)


Co-authored-by: Yury Selivanov <yury@edgedb.com>
(cherry picked from commit 533e725821b15e2df2cd4479a34597c1d8faf616)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
3 files changed