IAV-1416/bugfix(wizard/integrations): recover stale n8n workflow ids and enrich combined setup payloads
- WizardCombinedIntegrationRequest: add slackPlatformAccountId and forward platformAccountId to orchestration.
- PublicMarketWizardServiceImpl: prefer Teams appDisplayName for integration naming; return Slack userIntegrationUid, credentialInstanceUid and resolved integrationName in combined setup response.
- PublicMarketIntegrationServiceImpl: detect stale/deleted N8N workflow ids; recreate main workflow when missing and clear stale notification workflow id instead of failing.