AMBARI-9199 Configs: broken configs flow after discarding recommendations. (atkach)

ambari-web/app/controllers/main/service/info/configs.js

@@ -2366,6 +2366,7 @@ App.MainServiceInfoConfigsController = Em.Controller.extend(App.ServerValidatorM
    * @method loadStep
    */
   doCancel: function () {
+    this.set('preSelectedConfigVersion', null);
     Em.run.once(this, 'onConfigGroupChange');
   },
 

ambari-web/app/views/common/configs/config_history_flow.js

@@ -500,6 +500,7 @@ App.ConfigHistoryFlowView = Em.View.extend({
       },
       onDiscard: function () {
         this.hide();
+        self.set('controller.preSelectedConfigVersion', null);
         self.get('controller').loadStep();
       },
       onCancel: function () {