Cron issues not triggering issue webhooks

### Environment SaaS (https://sentry.io/) ### Steps to Reproduce 1. Create an internal integration 2. Add a webhook endpoint 3. Enable "Issue" webhook for "created, resolved, assigned, archived, unresolved" 4. Create a cron monitor alert 5. Trigger a failure in the cron monitor ### Expected Result Sentry sends a "Issue created" webhook request to the defined in the internal integration. The webhook documentation does not mention limitations on which kind of issues can trigger webhooks, thus it is expected that all issues can trigger webhooks. ### Actual Result No webhook is sent. Scenarios where no webhook request is sent: 1. Cron monitor issue creation 2. Cron monitor issue auto-resolve by new OK check-in Scenarios where a webhook request is sent: 1. Cron monitor issue automatically assigned 2. Cron monitor issue manually resolved ### Product Area Settings - Integrations ### Link _No response_ ### DSN _No response_ ### Version _No response_