🐛 [BUG] G2Plot 漏斗图在数据为空时候会报错

[mumu-baba]

🐛 Bug description

官方演示demo 就可以复现，数据给空就行

💻 Link to minimal reproduction

https://g2plot.antv.vision/zh/examples/case/statistical-scenario#trend-funnel

📷 Step to reproduce

🏞 Expected result

🚑 Any additional [like screenshots]

• G2Plot Version:latest
• Platform:

[susiwen8]

+1, G2的 漏斗图为空不会报错

[susiwen8]

https://github.com/antvis/G2Plot/blob/master/src/plots/funnel/geometries/basic.ts#L19

应该在这里做个判断，如果 data 是空数组，直接 chart.data([]);