Fixes more tree syncing - setActiveTreeType should *not* perform any tree loading, it should just set the active root tree node. syncTree is always used in conjunction with that call in the legacy API which means we get 2 tree queries loading at once and syncing ends up not working. We'll create a nicer method for our angular views to use to sync the tree, setActiveTreeType will typically only be used by the legacy umbraco wrapper.