互斥工具飞行，添加动画实体

liuyg

2021-06-19 c2a0f87ace207301984c1b305444cc019616af5a

1
.claro .dijitTreeRtl .dijitTreeExpandoLoading {background-image: url("../../icons/images/loadingAnimation_rtl.gif"); background-position: 100% 0;}