refactor(frontend): convert contexts layer to TS and align page integration

frontend/src/static/js/utils/contexts/TextsContext.ts

@@ -0,0 +1,12 @@
+import { createContext } from 'react';
+import { config as mediacmsConfig } from '../settings/config';
+
+const notifications = mediacmsConfig(window.MediaCMS).notifications.messages;
+
+const texts = {
+    notifications,
+};
+
+export const TextsContext = createContext(texts);
+
+export const TextsConsumer = TextsContext.Consumer;