logs: Refactor the heartbeat to use setInterval instead of setTimeout

Change-type: patch

src/features/device-logs/lib/read.ts

@@ -115,26 +115,30 @@ async function handleStreamingRead(
 		}
 	});
 
-	let heartbeatTimeout: ReturnType<typeof setTimeout> | null = null;
+	let heartbeatInterval: ReturnType<typeof setInterval> | null = null;
 
 	function heartbeat() {
 		if (state !== StreamState.Closed) {
 			// In order to keep the connection alive, output new lines every now and then
 			write('\n');
-			heartbeatTimeout = setTimeout(heartbeat, LOGS_HEARTBEAT_INTERVAL);
+			return;
+		}
+		if (heartbeatInterval != null) {
+			clearInterval(heartbeatInterval);
+			heartbeatInterval = null;
 		}
 	}
 
-	heartbeatTimeout = setTimeout(heartbeat, LOGS_HEARTBEAT_INTERVAL);
+	heartbeatInterval = setInterval(heartbeat, LOGS_HEARTBEAT_INTERVAL);
 
 	function close() {
 		if (state !== StreamState.Closed) {
 			state = StreamState.Closed;
 			getBackend().unsubscribe(ctx, onLog);
 		}
-		if (heartbeatTimeout != null) {
-			clearTimeout(heartbeatTimeout);
-			heartbeatTimeout = null;
+		if (heartbeatInterval != null) {
+			clearInterval(heartbeatInterval);
+			heartbeatInterval = null;
 		}
 	}