chore: improve health check log messages (#29787)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

apps/meteor/server/routes/health.ts

 import { WebApp } from 'meteor/webapp';
 
 import { isRunningMs } from '../lib/isRunningMs';
+import { SystemLogger } from '../lib/logger/system';
 
 WebApp.rawConnectHandlers.use('/health', async function (_req, res) {
 	res.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate');
@@ -12,6 +13,7 @@ WebApp.rawConnectHandlers.use('/health', async function (_req, res) {
 		const { isLastDocDelayed } = await import('../startup/watchDb');
 
 		if (isLastDocDelayed()) {
+			SystemLogger.error('System not healthy due to no real time data received recently');
 			res.writeHead(500);
 			res.end('not healthy');
 			return;

ee/apps/ddp-streamer/src/DDPStreamer.ts

@@ -153,7 +153,11 @@ export class DDPStreamer extends ServiceClass {
 			.use(proxy())
 			.get('/health', async (_req, res) => {
 				try {
-					await this.api?.nodeList();
+					if (!this.api) {
+						throw new Error('API not available');
+					}
+
+					await this.api.nodeList();
 					res.end('ok');
 				} catch (err) {
 					console.error('Service not healthy', err);

ee/apps/stream-hub-service/src/service.ts

@@ -33,7 +33,7 @@ const PORT = process.env.PORT || 3035;
 				await api.nodeList();
 
 				if (watcher.isLastDocDelayed()) {
-					throw new Error('not healthy');
+					throw new Error('No real time data received recently');
 				}
 			} catch (err) {
 				console.error('Service not healthy', err);