server: too many warn logs when shard move to other node

[mattisonchao]

Motivation

Aug 22, 2024 @ 13:07:20.372 | {"level":"warn","time":"2024-08-22T13:07:20.372802709Z","component":"public-rpc-server","error":{"error":"rpc error: code = Code(108) desc = oxia: session not found","kind":"*status.Error","stack":null},"time":"2024-08-22T13:07:20.372826194Z","message":"Failed to close session"}
-- | --

  | Aug 22, 2024 @ 13:07:17.164 | {"level":"warn","time":"2024-08-22T13:07:17.164331958Z","component":"public-rpc-server","error":{"error":"rpc error: code = Code(108) desc = oxia: session not found","kind":"*status.Error","stack":null},"time":"2024-08-22T13:07:17.164363517Z","message":"Failed to listen to heartbeats"}

  | Aug 22, 2024 @ 13:07:14.049 | {"level":"warn","time":"2024-08-22T13:07:14.048739119Z","component":"public-rpc-server","error":{"error":"rpc error: code = Code(108) desc = oxia: session not found","kind":"*status.Error","stack":null},"time":"2024-08-22T13:07:14.048762817Z","message":"Failed to close session"}

  | Aug 22, 2024 @ 13:07:14.048 | {"level":"warn","time":"2024-08-22T13:07:14.048761809Z","component":"public-rpc-server","error":{"error":"rpc error: code = Code(108) desc = oxia: session not found","kind":"*status.Error","stack":null},"time":"2024-08-22T13:07:14.048775132Z","message":"Failed to close session"}

[lsytj0413]

This should closed by #609
cc @mattisonchao