Update livekit-ffi to 0.12.57 (#668)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: 3 people

livekit-rtc/livekit/rtc/_proto/audio_frame_pb2.py

@@ -555,10 +555,11 @@ def on_participant_connected(participant):
         # start listening to room events
         self._task = self._loop.create_task(self._listen_task())
 
+        # TODO(sxian): Re-enable once a new livekit-ffi release includes ReadyForRoomEvent
         # Unblock the FFI server once this SDK is ready to receive room events.
-        ready_req = proto_ffi.FfiRequest()
-        ready_req.ready_for_room_event.room_handle = self._ffi_handle.handle
-        FfiClient.instance.request(ready_req)
+        # ready_req = proto_ffi.FfiRequest()
+        # ready_req.ready_for_room_event.room_handle = self._ffi_handle.handle
+        # FfiClient.instance.request(ready_req)
 
     async def get_rtc_stats(self) -> RtcStats:
         if not self.isconnected():