Handle malformed webhook event config

[aiirvizionz]

Fixes a dashboard crash when an outbound webhook row has malformed or empty events data.

Before this change, the project webhooks view parsed e.events inline during render. Any bad stored value could throw from JSON.parse and prevent the dashboard from rendering.

This PR adds a defensive formatter so valid arrays still render normally, empty configs show all events, and malformed configs show invalid event config instead of crashing the page.

Validation:

• npx tsc --noEmit
• git diff --check