Various little adjustments relative to the new i18n API

stories/login/i18n.ts

@@ -1,9 +1,9 @@
-import { i18nApi } from "../../dist/login";
+import { i18nInitializer } from "../../dist/login";
 import type { ThemeName } from "../kc.gen";
 
-export const { useI18n, ofTypeI18n } = i18nApi
+export const { useI18n, ofTypeI18n } = i18nInitializer
     .withThemeName<ThemeName>()
-    .withTranslations({})
+    .withCustomTranslations({})
     .create();
 
 export type I18n = typeof ofTypeI18n;