Cari Palazzolo

Here's one example I found in the wild of "none" selection-mode with IntegralUI's TreeView component for Angular: https://www.lidorsystems.com/support/articles/angular/treeview/treeview-multi-select.aspx

This reminds me of the trim dom util Matt and I discussed in https://github.com/Esri/calcite-components/issues/2096. Should we can make the trim util available for use in consuming apps?