Patch tests from failing on subscription due to rate limits (#386)

<!-- greptile_comment -->

## Greptile Summary

Modified error handling and test configuration in
RemoteAccountUpdatesWorker to address 'too many requests' errors during
testing.

- Added conditional compilation (`#[cfg]`) in
`magicblock-account-updates/src/remote_account_updates_worker.rs` to
panic on shard failures during tests while logging errors in production
- Reduced WebSocket connections from 2 to 1 in
`magicblock-account-updates/tests/remote_account_updates.rs` to prevent
rate limiting
- Added `env_logger = "0.11"` to `magicblock-account-updates/Cargo.toml`
for improved test logging
- Consider adding retry mechanism or connection pooling for more robust
testing



<!-- /greptile_comment -->

Author: taco-paco

Cargo.lock

@@ -24,3 +24,4 @@ thiserror = { workspace = true }
 
 [dev-dependencies]
 test-tools = { workspace = true }
+env_logger = { workspace = true }

magicblock-account-updates/Cargo.toml

@@ -186,7 +186,11 @@ impl RemoteAccountUpdatesWorker {
                 .start_monitoring_request_processing(shard_cancellation_token)
                 .await
             {
+                #[cfg(not(test))]
                 error!("Runner shard has failed: {}: {:?}", shard_id, error);
+
+                #[cfg(test)]
+                panic!("Runner shard has failed: {}: {:?}", shard_id, error);
             }
         });
         let runner = RemoteAccountUpdatesWorkerRunner {

magicblock-account-updates/src/remote_account_updates_worker.rs

@@ -19,9 +19,10 @@ async fn setup() -> (
     CancellationToken,
     tokio::task::JoinHandle<()>,
 ) {
+    let _ = env_logger::builder().is_test(true).try_init();
     // Create account updates worker and client
     let mut worker = RemoteAccountUpdatesWorker::new(
-        vec![RpcProviderConfig::devnet().ws_url().into(); 2],
+        vec![RpcProviderConfig::devnet().ws_url().into(); 1],
         Some(solana_sdk::commitment_config::CommitmentLevel::Confirmed),
         Duration::from_secs(50 * 60),
     );