message: chore: include backtrace in integration rpc error
diff: @@ -116,7 +116,7 @@ impl IntegrationTestRpc for IntegrationTestRpcImpl {
  .broadcast(SupportProtocols::Relay.protocol_id(), message.as_bytes())
  {
  error!("Broadcast transaction failed: {:?}", err);
  - Err(RPCError::custom(RPCError::Invalid, err.to_string()))
  + Err(RPCError::ckb_internal_error(err))
  } else {
  Ok(hash.unpack())
  }
  