[Bug] map error when handler drag

[skie1997]

Version

latest

Link to Minimal Reproduction

solar

Steps to Reproduce

const response = await fetch('https://tosv.byted.org/obj/bit-cloud/province.json');

const provinceData = await response.json();
VChart.registerMap('china', provinceData, {
    type: 'geojson',
    simplify: true,
  });

const spec = {
    "type": "common",
    "color": {
        "type": "linear",
        "domain": [
            0,
            1
        ],
        "range": [
            "#D3E0F8",
            "#2C6DDE"
        ],
        "clamp": true
    },
    "region": [
        {
            "roam": true,
            "coordinate": "geo",
            "longitudeField": "lon",
            "latitudeField": "lat",
            "zoomLimit": {
                "min": 1
            }
        }
    ],
    "series": [
        {
            "type": "map",
            "map": "china",
            "nameField": "name",
            "valueField": "value",
            "seriesField": "name",
            "nameProperty": "name",
            "centroidProperty": "centroid",
            "area": {
                "style": {
                    "fill": "#f3f3f3"
                }
            }
        },
        {
            "regionIndex": 0,
            "type": "scatter",
            "data": {
                "values": [
                    {
                        "name": "佛山市",
                        "value": 420597.1133667062,
                        "lon": "113.1227",
                        "lat": "23.0287"
                    },
                    {
                        "name": "北京市",
                        "value": 135236.04995461597,
                        "lon": "116.4074",
                        "lat": "39.9042"
                    },
                    {
                        "name": "白城市",
                        "value": 218074.9607763632,
                        "lon": "122.8207",
                        "lat": "45.6227"
                    }
                ]
            },
            "xField": "name",
            "yField": "value",
            "shape": "circle",
            "label": {
                "visible": true,
                "animation": {
                    "duration": 0
                }
            },
            "point": {
                "style": {
                    "fill": {
                        "field": "value",
                        "scale": "color",
                        "changeDomain": "replace"
                    }
                },
                "state": {
                    "hover": {
                        "style": {
                            "stroke": "rgba(0, 0, 0, 0.8)",
                            "lineWidth": 1
                        }
                    }
                }
            }
        }
    ],
    "tooltip": {
        "visible": true,
        "renderMode": "html"
    },
    "legends": [
        {
            "visible": true,
            "type": "color",
            "field": "value",
            "padding": 0,
            "orient": "bottom",
            "position": "start",
            "bottom": 0,
            "handler": {
                "style": {
                    "symbolType": "triangle",
                    "dy": 10,
                    "outerBorder": {
                        "lineWidth": 1
                    }
                }
            },
            "handlerText": {
                "style": {
                    "dy": 4
                }
            }
        }
    ]
}

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

// Just for the convenience of console debugging, DO NOT COPY!
window['vchart'] = vchart;

Current Behavior

Expected Behavior

不报错

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response