asyncio currently uses iterable coroutine directly to wrap awaitables with__await__ methods. This leads to unnecessary special casing and is confusing asasyncio does not supports usingyield from now so it should not be used internally too. This will avoid checking for generators everywhere in public APIs (TBD for different issue).

Linked PRs

• GH-100112: avoid using iterable coroutines in asyncio internally #100128