Restyle in a zoomed 3D state sometimes changes the zoom level

When using Scatter3D, sometimes if the plot is restyled while it is in a zoomed state, the zoom level is spontaneously changed; sometimes a little, sometimes a lot.

To reproduce:

1. Visit this codepen: https://codepen.io/k_sze/pen/WXgNoJ
2. Zoom the plot a little bit using your mouse wheel; You can zoom in or out;
3. Open codepen's console and run the restyle() function;
4. Watch the plot's zoom level get changed spontaneously.

You may need to repeat steps 2 and 3 a few times.

Not sure if it's related to #346 and the fix in #351.

使用 Scatter3D 透過連結的 CodePen 重現此問題：使用滑鼠滾輪縮放，然後從主控台執行 restyle()。追蹤 Scatter3D 的 restyle 路徑，並將行為與相關的 issue #346 和 #351 進行比較。當 restyling 不再變更圖表現有的縮放層級時，即表示完成。