point图使用数据调整功能时，point跑到错误位置 #3737

const container = createDiv();
    const chart = new Chart({
      container,
      autoFit: true,
      width: 300,
      height: 300,
      padding: 0,
    });

    chart.data(data);
    chart.scale('category', {
      type: 'cat',
      values: ['A', 'B', 'C', 'D', 'E'],
      range: [0, 1],
      nice: true,
    });
    chart.axis('category', {
      grid: {
        alignTick: false,
      },
    });

    chart.point().adjust('jitter').position('category*value');

    chart.render();

https://github.com/antvis/G2/blob/b0ae2314fc39fec21cb98ada305eaceb02f13bc9/src/geometry/base.ts#L1825 result的值类似下面这样的

[
  [
    { "category": 0, "value": 1, "_origin": { "category": "A", "value": 1 } },
    { "category": 0, "value": 1.5, "_origin": { "category": "A", "value": 1.5 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 1, "value": 2, "_origin": { "category": "B", "value": 2 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 3, "value": 3, "_origin": { "category": "D", "value": 3 } },
    { "category": 4, "value": 3, "_origin": { "category": "E", "value": 3 } }
  ]
]

adjust获取到的data是没有 category：C的，adjust不知道有C这个种类，但是scale会影响绘图坐标刻度，scale多了C这个category，这就导致了绘制几何图形B种类的点跑到C区域里去。 adjust的实现属于另外一个repo https://github.com/antvis/adjust/blob/7447e756a31ef25d911e021109cc99742cb6e63a/src/adjusts/jitter.ts 理论上没什么问题，但是没有考虑到 scale造成的影响。

可以看下，adjust 这个库目前是按照 groupData 来确定究竟有多少分组。但是实际上忽略了没有数据的那部分，可以看下该从哪里解决，让其识别准确的分组