【bug】1) webmap，解决通过iportal注册服务的4490地图，打开报错。

（reviewed by chengl）

Author: Yuki-Zhao

src/openlayers/mapping/WebMap.js

@@ -313,7 +313,7 @@ export class WebMap extends Observable {
         if (handleResult.action === "BrowseMap") {
             that.createSpecLayer(mapInfo);
         } else if (handleResult.action === "OpenMap") {
-            that.baseProjection = mapInfo.projection;
+            that.baseProjection = handleResult.newCrs ||mapInfo.projection;
             that.webMapVersion = mapInfo.version;
             that.baseLayer = mapInfo.baseLayer;
             // that.mapParams = {