TreeView: provide a way to control ability to select nodes#32433

pharret31 wants to merge 2 commits intoDevExpress:26_1DevExpress/DevExtreme:26_1from

pharret31:26_1_3249-treeview-provide-a-way-to-control-ability-to-select-nodes-qw-implementation-and-stylespharret31/DevExtreme:26_1_3249-treeview-provide-a-way-to-control-ability-to-select-nodes-qw-implementation-and-stylesCopy head branch name to clipboard