VChart [Bug] curveType monotone can't be applied to the part having invalid data

Version

1.12.1

Link to Minimal Reproduction

use the spec in doc website

Steps to Reproduce

Use the spec

const spec = {
    "type": "line",
    "data": {
        "values": [
            {
                "Date": "2024-07-24",
                "Avg. Mood": 6
            },
            {
                "Date": "2024-08-23",
                "Avg. Mood": 1
            },
            {
                "Date": "2024-08-25",
                "Avg. Mood": 5.5
            },
            {
                "Date": "2024-08-27",
                "Avg. Mood": 4
            },
            {
                "Date": "2024-08-28",
                "Avg. Mood": 9
            },
            {
                "Date": "2024-09-30",
                "Avg. Mood": null
            },
            {
                "Date": "2024-10-01",
                "Avg. Mood": 3
            }
        ]
    },
    "xField": "Date",
    "yField": "Avg. Mood",
    "axes": [
        {
            "orient": "left",
            "min": 0,
            "max": 10
        }
    ],
    "line": {
        "style": {
            "curveType": "monotone"
        }
    },
    "invalidType": "link"
}

const vchart = new VChart(spec, { dom: CONTAINER_ID });

vchart.renderSync();