Update ListView ref type to allow undefined value in DemoShowroomScreen

Author: fpena

boilerplate/app/components/ListView.tsx

@@ -36,6 +36,6 @@ ListViewComponent.displayName = "ListView"
 
 export const ListView = ListViewComponent as <T>(
   props: ListViewProps<T> & {
-    ref?: RefObject<ListViewRef<T>>
+    ref?: RefObject<ListViewRef<T> | undefined>
   },
 ) => ReactElement

boilerplate/app/screens/DemoShowroomScreen/DemoShowroomScreen.tsx

@@ -96,7 +96,7 @@ export const DemoShowroomScreen: FC<DemoTabScreenProps<"DemoShowroom">> =
     const [open, setOpen] = useState(false)
     const timeout = useRef<ReturnType<typeof setTimeout>>()
     const listRef = useRef<SectionList>(null)
-    const menuRef = useRef<ListViewRef<DemoListItem["item"]>>(null)
+    const menuRef = useRef<ListViewRef<DemoListItem["item"]> | undefined>(undefined)
     const route = useRoute<RouteProp<DemoTabParamList, "DemoShowroom">>()
     const params = route.params