🐛 [BUG] 通用型问题：x轴设置为数值型 && x 为一位数，图表会展示不完整

### 🐛 Bug description [Please make everyone to understand it]
当x 轴设置为一位数的数字，最后一个标签会不展示，但是设置为2位数及以上就没问题，甚至是小数也没问题

有问题的图表：折线图、柱状图、区间柱状图、百分比柱状图、瀑布图、气泡图、子弹图
复现：https://codesandbox.io/s/boring-engelbart-13gch?file=/index.ts

* **G2Plot Version**: 2.3.40
* **Platform**: g2plot 2.x

Start by reproducing the one-digit numeric x-axis case from the linked CodeSandbox at index.ts with G2Plot 2.3.40. Compare the line, bar, interval bar, percent bar, waterfall, bubble, and bullet charts to identify the shared axis behavior; done means the final label is displayed correctly for each affected chart.

Written by the indexing model from the issue text.