refactor: use get_server

Author: observerw

src/lsp_client/client/abc.py

@@ -153,15 +153,15 @@ async def request[R](
     ) -> R:
         req = request_serialize(req)
         with anyio.fail_after(self.request_timeout):
-            raw_resp = await self._server.request(req)
+            raw_resp = await self.get_server().request(req)
             return response_deserialize(raw_resp, schema)
 
     @override
     # @retry(stop=tenacity.stop_after_attempt(3), reraise=True)
     async def notify(self, msg: Notification) -> None:
         noti = notification_serialize(msg)
         with anyio.fail_after(self.request_timeout):
-            await self._server.notify(noti)
+            await self.get_server().notify(noti)
 
     async def _dispatch_server_requests(
         self, receiver: Receiver[ServerRequest]
@@ -239,7 +239,7 @@ async def __asynccontextmanager__(self) -> AsyncGenerator[Self]:
         async with (
             asyncer.create_task_group() as tg,
             channel[ServerRequest].create() as (sender, receiver),
-            self._server.serve(workspace=self.get_workspace(), sender=sender),
+            self.get_server().serve(workspace=self.get_workspace(), sender=sender),
         ):
             # start to receive server requests here,
             # since server notification can be sent before `initialize`