Correctly initialize context

Author: Gregoor

fluent-react/src/context.js

@@ -1,4 +1,7 @@
 import { createContext } from "react";
 import ReactLocalization from "./localization";
 
-export default createContext(new ReactLocalization([]));
+export default createContext({
+  l10n: new ReactLocalization([]),
+  parseMarkup: null
+});