[bug] 修复demo因为cookie不出图的问题

（reviewed by sym）

Author: Yuki-Zhao

src/openlayers/mapping/WebMap.js

@@ -4301,7 +4301,7 @@ export class WebMap extends Observable {
    * @returns { boolean | undefined } 是否带上cookie
    */
   isCredentail(url, proxy) {
-    if(this.isIportalProxyServiceUrl(url) || (proxy !== false && !CommonUtil.isInTheSameDomain(url))) {
+    if(proxy || this.isIportalProxyServiceUrl(url) || CommonUtil.isInTheSameDomain(url)) {
       return true
     }
     return;