UI: fix maps update

@@ -307,11 +307,11 @@ export default abstract class LeafletMap {
             keys.push(data.entityName);
           });
           const toDelete: string[] = [];
-          for (const mKey in this.markers.keys()) {
+          this.markers.forEach((v, mKey) => {
             if (!keys.includes(mKey)) {
               toDelete.push(mKey);
             }
-          }
+          });
           toDelete.forEach((key) => {
             this.deleteMarker(key);
           });
@@ -408,11 +408,11 @@ export default abstract class LeafletMap {
             }
         });
         const toDelete: string[] = [];
-        for (const mKey in this.polylines.keys()) {
+        this.polylines.forEach((v, mKey) => {
           if (!keys.includes(mKey)) {
             toDelete.push(mKey);
           }
-        }
+        });
         toDelete.forEach((key) => {
           this.removePolyline(key);
         });
@@ -471,11 +471,11 @@ export default abstract class LeafletMap {
             }
         });
         const toDelete: string[] = [];
-        for (const mKey in this.polygons.keys()) {
+        this.polygons.forEach((v, mKey) => {
           if (!keys.includes(mKey)) {
             toDelete.push(mKey);
           }
-        }
+        });
         toDelete.forEach((key) => {
           this.removePolygon(key);
         });

@@ -714,9 +714,8 @@ export class WidgetConfigComponent extends PageComponent implements OnInit, Cont
   }
 
   private fetchEntityKeys(entityAliasId: string, query: string, dataKeyTypes: Array<DataKeyType>): Observable<Array<DataKey>> {
-    return this.aliasController.getAliasInfo(entityAliasId).pipe(
-      mergeMap((aliasInfo) => {
-        const entity = aliasInfo.currentEntity;
+    return this.aliasController.resolveSingleEntityInfo(entityAliasId).pipe(
+      mergeMap((entity) => {
         if (entity) {
           const fetchEntityTasks: Array<Observable<Array<DataKey>>> = [];
           for (const dataKeyType of dataKeyTypes) {