🐛 Fix function serde issue in standalone mode
🐛 Fix function serde issue in standalone mode

1. cache function deserialization

Signed-off-by: weiwee <55f89532913a49bd663cced9d8f0fa01c4dcc8b3@gmail.com>

FederatedAI/FATE,FederatedAI/FATE,FederatedAI/FATE