Fix query-validators (#4580)

## Motivation

After #3881 we stopped checking signatures (my bad!)

## Proposal

Fix the typo

## Test Plan

CI + tested manually

## Release Plan

- These changes should be backported to the latest `testnet` branch,
then
    - be released in a new SDK,

Author: ma2bd

linera-client/src/client_context.rs

@@ -23,7 +23,7 @@ use linera_persistent::{Persist, PersistExt as _};
 use linera_rpc::node_provider::{NodeOptions, NodeProvider};
 use linera_version::VersionInfo;
 use thiserror_context::Context;
-use tracing::{debug, info};
+use tracing::{debug, info, warn};
 #[cfg(not(web))]
 use {
     crate::{
@@ -568,6 +568,8 @@ impl<Env: Environment, W: Persist<Target = Wallet>> ClientContext<Env, W> {
                         }
                         .into());
                     }
+                } else {
+                    warn!("Not checking signature as public key was not given");
                 }
                 Ok(())
             }

linera-service/src/cli/main.rs

@@ -519,7 +519,7 @@ impl Runnable for Job {
                             .push(e);
                     }
                     if let Err(e) = context
-                        .check_validator_chain_info_response(None, address, &node, chain_id)
+                        .check_validator_chain_info_response(Some(name), address, &node, chain_id)
                         .await
                     {
                         error!("{}", e);