fix(frontend): onboarding re-directs (#11126)

## Changes 🏗️

We weren't awaiting the onboarding enabled check and also we were
re-directing to a wrong onboarding URL.

## Checklist 📋

### For code changes

- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] Create a new user
  - [x] Re-directs well to onboarding
  - [x] Complete up to Step 5 and logout
  - [x] Login again
  - [x] You are on Step 5  

#### For configuration changes:

None

autogpt_platform/frontend/src/app/(no-navbar)/onboarding/page.tsx

@@ -1,14 +1,16 @@
 import BackendAPI from "@/lib/autogpt-server-api";
 import { redirect } from "next/navigation";
 import { finishOnboarding } from "./6-congrats/actions";
+import { shouldShowOnboarding } from "@/app/api/helpers";
 
 // Force dynamic rendering to avoid static generation issues with cookies
 export const dynamic = "force-dynamic";
 
 export default async function OnboardingPage() {
   const api = new BackendAPI();
+  const isOnboardingEnabled = await shouldShowOnboarding();
 
-  if (!api.isOnboardingEnabled()) {
+  if (!isOnboardingEnabled) {
     redirect("/marketplace");
   }
 
@@ -23,7 +25,7 @@ export default async function OnboardingPage() {
   else if (onboarding.completedSteps.includes("AGENT_NEW_RUN"))
     redirect("/onboarding/5-run");
   else if (onboarding.completedSteps.includes("AGENT_CHOICE"))
-    redirect("/onboarding/5-agent");
+    redirect("/onboarding/5-run");
   else if (onboarding.completedSteps.includes("INTEGRATIONS"))
     redirect("/onboarding/4-agent");
   else if (onboarding.completedSteps.includes("USAGE_REASON"))