AI models dashboard refined with focused metrics and simplified flags

The AI models dashboard has been decluttered by removing global call metrics and prioritizing individual usage, while behind-the-scenes feature flags were consolidated into a single access toggle.
The AI models dashboard has a cleaner layout. The "Calls" metric was removed from the global overview and models list. Tabs were reordered and renamed to prioritize individual usage ("Metrics") over global statistics, and chart heights were adjusted to better fit the screen.
This puts the focus on actionable data—how a specific organization uses AI models—rather than broad global metrics. Behind the scenes, multiple feature flags for AI access were merged into a single toggle, cutting down configuration overhead for administrators.
These updates happen in the webapp's AI models routes and feature flag configuration.