Automated change: Fix sanity tests

src/python/grpcio/grpc/aio/_base_server.py

diff --git a/src/python/grpcio/grpc/aio/_base_server.py b/src/python/grpcio/grpc/aio/_base_server.py
index 3559568..1ed3f60 100644
--- a/src/python/grpcio/grpc/aio/_base_server.py
+++ b/src/python/grpcio/grpc/aio/_base_server.py
@@ -18,7 +18,9 @@
 
 import grpc
 
-from ._metadata import Metadata  # pyright: ignore[reportUnusedImport] # pylint: disable=unused-import
+from ._metadata import (
+    Metadata,  # pyright: ignore[reportUnusedImport] # pylint: disable=unused-import
+)
 from ._typing import DoneCallbackType
 from ._typing import MetadataType
 from ._typing import RequestType
@@ -137,7 +139,9 @@
         """
 
     def add_registered_method_handlers(  # noqa: B027
-        self, service_name: str, method_handlers: Mapping[str, grpc.RpcMethodHandler]
+        self,
+        service_name: str,
+        method_handlers: Mapping[str, grpc.RpcMethodHandler],
     ):
         """Registers GenericRpcHandlers with this Server.
 

src/python/grpcio/grpc/aio/_metadata.py

diff --git a/src/python/grpcio/grpc/aio/_metadata.py b/src/python/grpcio/grpc/aio/_metadata.py
index 8a885d7..4be094a 100644
--- a/src/python/grpcio/grpc/aio/_metadata.py
+++ b/src/python/grpcio/grpc/aio/_metadata.py
@@ -46,6 +46,7 @@
         * Supports an immutable view of the data
         * Allows partial mutation on the data without recreating the new object from scratch.
     """
+
     _metadata: OrderedDict[MetadataKey, List[MetadataValue]]
 
     def __init__(self, *args: MetadatumType) -> None: