refactor: replace 'preact' with 'react' (#1048)

app/assets/javascripts/Components/Menu/MenuItemSeparator.tsx

@@ -0,0 +1,9 @@
+import { FunctionComponent } from 'react'
+
+const MenuItemSeparator: FunctionComponent = () => (
+  <li className="list-style-none" role="none">
+    <div role="separator" className="h-1px my-2 bg-border" />
+  </li>
+)
+
+export default MenuItemSeparator