F2折线图xAxis最右边的值被遮挡无法显示全

- **F2 Version**: 4.0.48
- **Platform**: 微信小程序
- **Mini Showcase(like screenshots)**:

- **CodeSandbox Link**:
https://codesandbox.io/s/f2-reproduction-template-forked-qhtlpf?file=/src/index.js

问题总结：F2折线图xAxis最右边的值被遮挡无法显示全
具体描述：如图所示，x轴最右边的值为2012-01-01 08:00，但是渲染的结果中只显示了“2012-01-01 08”

Start by reproducing the issue from the CodeSandbox entry point at /src/index.js using F2 4.0.48 on the stated chart configuration. Inspect how the line chart renders the rightmost x-axis label and verify that the complete value, “2012-01-01 08:00”, is visible without clipping.

Written by the indexing model from the issue text.