call: lint/format cleanup for lotus EC wiring

Resolve the eslint/prettier failures from the previous commit (non-blocking
in CI, but real): drop the banned `void` operator on fire-and-forget
transport.send().catch() calls, prefix the now-unused _denoiseNativeNS
param, and run prettier on the touched files.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/features/lotus/LotusDecorationPusher.tsx

@@ -43,9 +43,7 @@ export function LotusDecorationPusher({ callEmbed }: { callEmbed: CallEmbed }):
     map.current.forEach((url, userId) => {
       decorations[userId] = url;
     });
-    void callEmbed.call.transport
-      .send('io.lotus.decorations', { decorations })
-      .catch(() => undefined);
+    callEmbed.call.transport.send('io.lotus.decorations', { decorations }).catch(() => undefined);
   }, [callEmbed]);
 
   const schedulePush = useCallback(() => {