Fix the intermittent error in node initialization

[junha1]

It sometimes fails with

thread 'track_blocks' panicked at 'called `Result::unwrap()` on an `Err` value: Connect(Io(Os { code: 111, kind: ConnectionRefused, message: "Connection refused" }))', /home/junha/Projects/foundry/integration-test/src/lib.rs:147:47