add the 'area' property to 'scalemode' in the violin

Hello everyone, I have a question about the violin, why is there only two modes (count and width) in the scalemode in the plotly.js and there is no 'area', is the purpose of area achieved by other parameter control? If so, can you give an example? If not, I'd like to ask if it will be added in the future.
Here is the violin area pattern implemented by Seaborn.

Thank you

首先检查 violin trace 现有的 scalemode 选项、count 和 width，并将它们与 issue 中所示的 Seaborn area pattern 进行比较。定义新 area mode 的预期行为，然后添加该选项以及用于证明 violin area 按预期缩放的覆盖测试。