Don't block message sends on wallet balance fetches (#1165)

typescript/infra/scripts/helloworld/kathy.ts

@@ -221,11 +221,8 @@ async function main(): Promise<boolean> {
     messageSendSeconds.labels({ origin, remote }).inc(0);
     messageReceiptSeconds.labels({ origin, remote }).inc(0);
   }
-  await Promise.all(
+
-    chains.map(async (chain) => {
+  chains.map((chain) => updateWalletBalanceMetricFor(app, chain));
-      await updateWalletBalanceMetricFor(app, chain);
-    }),
-  );
 
   while (true) {
     currentPairingIndexGauge.set(currentPairingIndex);