fix(lit): correctly bind TextField type property to enable number inputs

[SliverKeigo]

Description

This PR fixes an issue where the TextField component in the Lit renderer was ignoring the type property (e.g., "number") from the A2UI JSON payload.

Problem

A property name mismatch between the renderer and component caused the input type to be ignored:

Location	Property Name	Code
root.ts (Sender)	.type	.type=${node.properties.type}
text-field.ts (Receiver)	inputType	accessor inputType

Result: <input type="number"> rendered as <input type="text">, allowing non-numeric input in number fields.

Solution

1. Lit Component (text-field.ts): Renamed inputType → textFieldType to avoid conflicts with the component's class type identifier.

2. Root Renderer (root.ts): Updated binding to .textFieldType=${node.properties.type}.

3. Samples (a2ui_examples.py): Added explicit "type": "shortText" and "type": "number" usage for clarity.

Verification

• ✅ textFieldType correctly receives values from JSON payload
• ✅ HTML input renders with type="number" when specified

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Hi @jacobsimionato 👋

Could you please take a look or help arrange a review?

Thanks! 🙏