category 轴的 max 影响了 extentecharts 柱状配置项内容和展示

       option = {
     legend: {},
     tooltip: {},
     xAxis: {
         type: 'category',
         data: ['a', 'b', 'c', 'd'],
         max: 2
     },
     yAxis: {},
     series: [{
             type: 'bar',
             label: {
                 show: true,
             },
             data: [10, 20, 30, 1000]
         }
     ]
 }