关于层叠条形图（甘特图）的一个x轴的问题

- [ ] I have searched the [issues](https://github.com/antvis/f2/issues) of this repository and believe that this is not a duplicate.

### Reproduction link
[https://codepen.io/jiyihui/pen/JjoYOzW?editors=0010](https://codepen.io/jiyihui/pen/JjoYOzW?editors=0010)

### Steps to reproduce
看上面codepen的现象 有两个问题 1。chart.source设置的ticks 貌似没有生效 2.x轴也没有按照type为timeCat等分间距 3，codepen 中的data数组里面的(year：a)有两段数据，一个间隔2小时10分钟，一个间隔1个小时，但是图上他们的长度看上去是一样的

### What is expected?
timeCat类型 能够去平分24小时（根据设置的ticks或者tickcount）， 然后每段数据的时间段显示的长度是能够和x轴的比例对应上的

### What is actually happening?
实际上这个功能没有实现，具体的看上面的重现步骤条目

| Environment | Info |
|---|---|
| f2 | 3.4.4 |
| System | window10 |
| Browser | chrome 76 |

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点击出现tooltip,onshow的回调函数能否 能看出我点击是哪条数据，而不是返回所有数据

Start with the linked CodePen reproduction and compare the stacked bar chart's timeCat x-axis against the configured ticks or tickCount. Check the reported unequal time-span rendering and the tooltip onShow data; done means the requested axis spacing and row-specific tooltip behavior are reproduced and resolved with verification in the example.

Written by the indexing model from the issue text.