DialogOverlayHandler class

Overlay handler that manages dialog display using the navigation stack.

Provides a standardized way to show dialogs through the overlay system with proper theme inheritance, animation handling, and modal behavior. Integrates with the shadcn_flutter overlay architecture for consistent dialog management across the application.

Features:

• Navigation-based dialog management
• Theme and data inheritance
• Configurable modal barriers
• Animation integration
• Proper focus management

Example:

const DialogOverlayHandler().show<String>(
  context: context,
  alignment: Alignment.center,
  builder: (context) => MyCustomDialog(),
);