Invalid project_id returned in error.created webhook

### Environment SaaS (https://sentry.io/) ### Steps to Reproduce 1. Configure internal-integration webhook on error.created 2. Send error to sentry and inspect what was received on webhook. (project_id is incorrect) See https://www.notion.so/sentry/Invalid-project_id-returned-in-error-created-webhook-6b7e3aaa487f4966855bf817ef309066 for full info ### Expected Result project_id should be correct/as-expected ### Actual Result project_id is not expected value, it's a project that isn't even valid ### Product Area Settings - Developer Settings ### Link _No response_ ### DSN _No response_ ### Version _No response_