Merge pull request #10347 from adube/utfgrid-source-handle-load-state-loaded

Set utfgrid tile as loaded after load instead of empty

src/ol/source/UTFGrid.js

@@ -187,7 +187,7 @@ export class CustomTile extends Tile {
     this.keys_ = json['keys'];
     this.data_ = json['data'];
 
-    this.state = TileState.EMPTY;
+    this.state = TileState.LOADED;
     this.changed();
   }