Nursery.start() doesn't specifically return None

Author: TeamSpen210

src/trio/_core/_run.py

@@ -1307,7 +1307,7 @@ async def start(  # type: ignore[explicit-any]
         async_fn: Callable[..., Awaitable[object]],
         *args: object,
         name: object = None,
-    ) -> Any | None:
+    ) -> Any:
         r"""Creates and initializes a child task.
 
         Like :meth:`start_soon`, but blocks until the new task has