[Feature] when the data of pie is not empty, but the values area all zero, pie can show equal sectors

[xile611]

What problem does this feature solve?

just seem to stillShowZeroSum of echarts

同时需要考虑负数场景，需要提供三种配置：

• 'ignore': 忽略，也就是过滤负数
• 'absolute': 根据绝对值进行处理
• 'none': 不做任何特殊处理

What does the proposed API look like?

{ stillShowZeroSum?: boolean }