Fix issues pie3 in ssim baselines matlab code examples data distribution plots pie3

[gilbertogalvis]

This PR fix almost all issues working with pie3 function base on code-examples in https://github.com/plotly/ssim_baselines/tree/main/matlab/code-examples/data-distribution-plots/pie3
Please test code-examples there.

Remembering... to work with pie3 matlab function, TreatAs optional parameter must set to 'pie3'. Example:

x = [1,3,0.5,2.5,2];
figure
pie3(x);
explode = [0,1,0,0,0];
figure
pie3(x,explode);

f = fig2plotly(gcf, 'offline', 0, 'TreatAs', 'pie3');

Results looks as:

links to chart-studio bellow

https://chart-studio.plotly.com/~galvisgilberto/3570/#/
https://chart-studio.plotly.com/~galvisgilberto/3564/#/
https://chart-studio.plotly.com/~galvisgilberto/3568/_2010/#/

[VolKa79]

Now it obviously works better then before

But for future still something wrong with labels

[gilbertogalvis]

Now it obviously works better then before

But for future still something wrong with labels

Correct!