make timeloard launcher fail with a non-zero exit code on windows (#18814)

* make timeloard launcher fail with a non-zero exit code on windows

* Update timelord_launcher.py

chia/timelord/timelord_launcher.py

@@ -175,7 +175,7 @@ async def async_main(config: dict[str, Any], net_config: dict[str, Any]) -> None
 def main():
     if os.name == "nt":
         log.info("Timelord launcher not supported on Windows.")
-        return
+        return 1
     root_path = DEFAULT_ROOT_PATH
     setproctitle("chia_timelord_launcher")
     net_config = load_config(root_path, "config.yaml")
@@ -186,4 +186,4 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
+    sys.exit(main())