Ava chat widget no longer appears inside the embed preview

The Ava sales chat widget was leaking into the embedded status page iframe shown in the homepage live preview. So visitors would see the chat bubble floating inside the preview frame as if it were part of the status page itself — which it obviously isn't and shouldn't be.

The widget script was loading without checking whether it was running inside an iframe. It now checks window.self !== window.top on init and skips rendering if it's embedded. The status page embed is clean, and Ava continues to load normally on all top-level pages.