FIX: Manually adding model to TreeViewPlugin ignores rootName

[mlankamp]

Describe the bug Configure the treeview plugin to not load the model automatically, and add the model to the treeview manually

To Reproduce

const treeview = new TreeViewPlugin(viewer, {
    containerElement: document.getElementById("treeViewContainer"),
    hierarchy: "types",
    autoExpandDepth: 1,
    autoAddModels: false
});

const sceneModel = xktLoader.load({
    id: "myModel",
    src: "../../assets/models/xkt/v8/ifc/IfcOpenHouse4.ifc.xkt"
});

sceneModel.on("loaded", ()=>{
    treeview.addModel(sceneModel.id, {rootName: "testing"});
});

Expected behavior The root node of the treeview should have the name of the specified rootName (in the example above testing)

[mlankamp]

@xeolabs any idea when this fixed? I can try to fix it