fix(dashboard): fixed issue with render event after resize

public/app/features/panel/panel_ctrl.ts

@@ -44,8 +44,8 @@ export class PanelCtrl {
       this.pluginName = plugin.name;
     }
 
-    $scope.$on("refresh", this.refresh.bind(this));
-    $scope.$on("render", this.render.bind(this));
+    $scope.$on("refresh", () => this.refresh());
+    $scope.$on("render", () => this.render());
     $scope.$on("$destroy", () => this.events.emit('panel-teardown'));
   }