Send gen_ai.tool.definitions with appropriate format #7973

[
    {
        "name": "get_weather",
        "description": "Get the current weather for a given location.",
        "type": "function",
        "parameters": {
            "type": "object",
            "properties": {
                "productId": {
                    "description": "The unique identifier for a product",
                    "type": "integer"
                },
                "productName": {
                    "description": "Name of the product",
                    "type": "string"
                },
                "price": {
                    "description": "The price of the product",
                    "type": "number",
                    "exclusiveMinimum": 0
                },
                "tags": {
                    "description": "Tags for the product",
                    "type": "array",
                    "items": {
                        "type": "string"
                    },
                    "minItems": 1,
                    "uniqueItems": true
                },
                "dimensions": {
                    "type": "object",
                    "properties": {
                        "length": { "type": "number" },
                        "width": { "type": "number" },
                        "height": { "type": "number" }
                    },
                    "required": ["length", "width", "height"]
                }
            },
            "required": ["productId", "productName", "price"]
        }
    },
    ...
]