feat(v4): Update the help center portal design (#10296)

Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/histoire.setup.ts

@@ -2,6 +2,7 @@ import './design-system/histoire.scss';
 import { defineSetupVue3 } from '@histoire/plugin-vue';
 import i18nMessages from 'dashboard/i18n';
 import { createI18n } from 'vue-i18n';
+import store from 'dashboard/store';
 
 const i18n = createI18n({
   legacy: false, // https://github.com/intlify/vue-i18n/issues/1902
@@ -10,5 +11,6 @@ const i18n = createI18n({
 });
 
 export const setupVue3 = defineSetupVue3(({ app }) => {
+  app.use(store);
   app.use(i18n);
 });