fix: tree select focus can not close select option

@@ -11638,6 +11638,7 @@ class UseLayUi {
                 // focus
                 $(`.${SELECT_CLS}`).off('click')
                     .on("click", ".layui-select-title", function (e) {
+                        $(document).find('.layui-form-select').removeClass('layui-form-selected')
                         $(this).parents(`.${SELECT_CLS}`).toggleClass("layui-form-selected");
                         layui.stope(e);
                     })