fix: render nullish account

src/components/Header.tsx

@@ -127,14 +127,14 @@ function HomeButton() {
 
 function Account() {
   const { account } = useAccountStore()
-  if (!account) return null
 
   // Hack to bypass truncated text mounting issues.
   const [key, setKey] = useState(0)
   useLayoutEffect(() => {
     requestAnimationFrame(() => setKey((key) => key + 1))
   }, [])
 
+  if (!account) return null
   return (
     <Link to="/" style={{ height: '100%' }}>
       <Box