feat: integrate useArrayVirtualizer for improved virtual list handling

- Added useArrayVirtualizer hook to manage virtual list functionality, including pagination and dynamic row height estimation.
- Refactored ArrayTestAppContent to utilize the new useArrayVirtualizer hook, simplifying state management and improving performance.
- Enhanced permalink handling with better state management for not found cases.
- Updated virtual-test-app to use the new virtualizer implementation.
- Cleaned up unused state and effects related to previous virtualizer logic.

Author: arv