增加环绕侦察场景适配

backend_service/venv/lib/python3.13/site-packages/anyio/abc/_eventloop.py

@@ -33,7 +33,6 @@ if TYPE_CHECKING:
     from .._core._synchronization import CapacityLimiter, Event, Lock, Semaphore
     from .._core._tasks import CancelScope
     from .._core._testing import TaskInfo
-    from ..from_thread import BlockingPortal
     from ._sockets import (
         ConnectedUDPSocket,
         ConnectedUNIXDatagramSocket,
@@ -231,11 +230,6 @@ class AsyncBackend(metaclass=ABCMeta):
     ) -> T_Retval:
         pass
 
-    @classmethod
-    @abstractmethod
-    def create_blocking_portal(cls) -> BlockingPortal:
-        pass
-
     @classmethod
     @abstractmethod
     async def open_process(