fix(boilerplate): update app.tsx useEffect (#2850 by @objectiveSee)

[skip ci]

Co-authored-by: Frank Calise <fcalise@gmail.com>

boilerplate/app/app.tsx

@@ -81,7 +81,7 @@ function App(props: AppProps) {
       .then(() => loadDateFnsLocale())
   }, [])
 
-  // @mst replace-next-line React.useEffect(() => {
+  // @mst replace-next-line useEffect(() => {
   const { rehydrated } = useInitialRootStore(() => {
     // @mst replace-next-line
     // This runs after the root store has been initialized and rehydrated.