refactor: update subscription data loading and clean up unused imports in dashboard components

app/routes/_admin.lg-admin._dashboard.subscribe-plan._index.tsx

@@ -1,4 +1,11 @@
+import { getSubscriptions } from '~/apis/common/get-subscriptions'
 import { SubscribePlanPage } from '~/pages/dashboard-plan-subscribe'
 
+import type { Route } from './+types/_admin.lg-admin._dashboard.contents._index'
+
+export const loader = async ({}: Route.LoaderArgs) => {
+  const { data: subscriptionsData } = await getSubscriptions()
+  return { subscriptionsData }
+}
 const DashboardSubscriptionsSettingsLayout = () => <SubscribePlanPage />
 export default DashboardSubscriptionsSettingsLayout