引入SVG之后图例无法正常显示

描述:当前是关于Echarts图表中的 散点图 示例。
 
            option = {
    title: {
        //text: 'Awesome Chart'
    },
    legend:{
        data:[{
            name:'aaa',
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        }],
        left: 10,
        bottom: 10,
    },
    xAxis: {
        data: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
    },
    yAxis: {},
    series: [{
        name:'aaa',
        type: 'scatter',
        data:[220, 182, 191, 234, 290, 330, 310]
    }]
};