fix(dashboard): fix campaign end date (#8935)

what:

- scopes the conditional to the right date attribute

<img width="1027" alt="Screenshot 2024-09-02 at 11 47 09" src="https://github.com/user-attachments/assets/87048b93-e118-4548-80ee-2564bc2e56e5">

RESOLVES CC-68

packages/admin-next/dashboard/src/routes/campaigns/campaign-detail/components/campaign-general-section/campaign-general-section.tsx

@@ -150,7 +150,7 @@ export const CampaignGeneralSection = ({
         </Text>
 
         <Text size="small" leading="compact">
-          {campaign.starts_at ? formatDate(campaign.ends_at) : "-"}
+          {campaign.ends_at ? formatDate(campaign.ends_at) : "-"}
         </Text>
       </div>
     </Container>