Update email status API path for poll invitations

Correctly fetch the email configuration status from the backend API endpoint.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 1117a91e-7ac6-4005-bde2-487c64d5789f
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Author: manfredsteger

client/src/pages/poll.tsx

@@ -215,7 +215,7 @@ export default function Poll() {
   }, [error, isAdminAccess, t]);
 
   const { data: emailStatus } = useQuery<{ smtpConfigured: boolean }>({
-    queryKey: ['/api/v1/system/email-status'],
+    queryKey: ['/api/v1/email-status'],
     staleTime: 60000,
   });
   const smtpConfigured = emailStatus?.smtpConfigured ?? true;