Transformer that injects modal state and actions into a Lavash Component.

This transformer:

1. Adds the open_field as an animated ephemeral state field (if not already defined)
2. Adds :close action that sets open_field to nil
3. Adds :noop action for preventing backdrop click propagation
4. Merges close behavior into any user-defined :close action
5. Merges form params clearing into :open action (if exists)

The open_field uses animated: true which triggers ExpandAnimatedStates to add:

• {open_field}_phase state field
• {open_field}_visible calculation
• {open_field}_animating calculation