Include Region Option in Deployment Notifications

### Problem Statement Regions are closely tied to my releases and deployments. ### Solution Brainstorm Seeing regions in my project releases details and in deployment notifications would be helpful. <img width="379" height="452" alt="Image" src="https://github.com/user-attachments/assets/ca5fbcfe-78a7-48ed-9cb7-a9ace7390ebd" /> https://docs.sentry.io/product/releases/release-details/ ### Product Area Releases