change default mode of cloudflare example to "warm", suppress listener info

examples/cloudflare-worker/src/index.ts

@@ -3,7 +3,7 @@
 import { serve } from "bknd/adapter/cloudflare";
 
 export default serve({
-   mode: "fresh",
+   mode: "warm",
    onBuilt: async (app) => {
       app.modules.server.get("/custom", (c) => c.json({ hello: "world" }));
    }