[v5] point mark encode shape not as expected #4518

现状

• 设置 encode('shape', 'diamond') 不生效，设置为 point 时，可以生效

<img width="400" alt="image" src="https://user-images.githubusercontent.com/15646325/209428625-def52a1d-6d48-4139-af1d-ecb8f3aa38fe.png">

<img width="400" alt="image" src="https://user-images.githubusercontent.com/15646325/209428640-6dee3008-dcfd-4058-8ac4-54b27f60b93f.png">

代码

import { Chart } from '@antv/g2';

const chart = new Chart({
  container: 'container',
  height: 120,
});

chart
  .point()
  .data({
    type: 'fetch',
    value:
      'https://gw.alipayobjects.com/os/basement_prod/6b4aa721-b039-49b9-99d8-540b3f87d339.json',
  })
  .encode('x', 'height')
  // work
  // .encode('shape','point')
  // do not work
  .encode('shape', 'diamond')

chart.render();