fix(final-preview-step.tsx): removed the second alert("Some Error Occured") povided to the User

Since when an error happened the user was getting 2 alerts, I removed the generic alert in the
dashboard application

404

apps/dashboard/src/components/new-group-stepper/final-preview-step.tsx

@@ -51,8 +51,6 @@ export default function FinalPreviewStep({
 
             if (response === null) {
                 setLoading(false)
-                alert("Some error occurred!")
-
                 return
             }
             navigate(`/groups/off-chain/${response.id}`)