Blazor Tree Grid Example - Persist State Configuration Support

This sample demonstrates state persistence, saving user configurations (sorting, filtering, column layout, search terms, and tree column index) across sessions.

Enable persistence by setting EnablePersistence to true. Manage state via GetPersistDataAsync, SetPersistDataAsync, and ResetPersistDataAsync.

The toolbar includes custom Save, Load, and Reset commands to control persisted settings interactively.

More information on state management can be found in the documentation section.