style: trim narration comments from recent changes

src/features/core/hooks/use-visual-viewport-size.ts

@@ -5,9 +5,6 @@ const eventListerOptions = {
 };
 
 const useVisualViewportSize = () => {
-  // Starts at zero on server and client alike, filling in after mount — the
-  // same contract as Mantine's useViewportSize. Reading window during render
-  // makes the client's first render disagree with the SSR markup.
   const [windowSize, setWindowSize] = useState({
     width: 0,
     height: 0,