marker在setSymbol的markerFile属性时，地图进行animateTo事件，会导致marker图片不显示

[Wuli-Zhang]

maptalks's version and what browser you use?

Issue description
----marker在setSymbol的markerFile属性时，地图进行animateTo事件，会导致marker图片不显示，控制台warning“no img found for ('引用图片地址') ”

伪代码：
point.on('click', (e) => {
e.target.setSymbol({
...default,
markerFile: "./assets/2.png"
});
// setTimeout(() => {
map.animateTo({
zoom: 18,
center: e.target._coordinates
}, {
duration: 800,
easing: "out"
});
})