feat: update admin navbar to display staff profile information and refactor loader data

app/routes/_admin.lg-admin.tsx

@@ -12,7 +12,7 @@ export const loader = async ({ request }: Route.LoaderArgs) => {
   const { staffToken } = await handleCookie(request)
   const { pathname } = new URL(request.url)
   const isAuthPage = AUTH_PAGES.includes(pathname)
-  let adminData
+  let staffData
 
   if (!isAuthPage && !staffToken) {
     throw redirect('/lg-admin/login')
@@ -26,11 +26,11 @@ export const loader = async ({ request }: Route.LoaderArgs) => {
     const { data } = await getStaff({
       accessToken: staffToken,
     })
-    adminData = data
+    staffData = data
   }
 
   return {
-    adminData,
+    staffData,
   }
 }