Rename function to better reflect what it does
Rename function to better reflect what it does

This function was originally written to add a scalar array to the
dataset, hence the old name. Now it sets the currently active scalars
like utils.set_array(), so the name has been updated to match. Also,
reordered function parameters to match order of utils.set_array().

cryos/tomviz,cryos/tomviz,cryos/tomviz,mathturtle/tomviz,thewtex/tomviz,cjh1/tomviz,OpenChemistry/tomviz,mathturtle/tomviz,OpenChemistry/tomviz,cjh1/tomviz,mathturtle/tomviz,thewtex/tomviz,OpenChemistry/tomviz,cjh1/tomviz,OpenChemistry/tomviz,thewtex/tomviz