Templating: Introduce macros to simplify and optimize some scopedVars (#65317)

* Templating: Introduce macros to simplify and optimize some scopedVars

* Fixing tests

* fix test

* minor fix

* refactoring so macros work with formatting

* remove breaking change and keep current inconsistency

* Rename valueIndex to rowIndex

* Minor fixes

* Added test dashboard

* Added tags to dashboard

* Update

* Added test to check it returns match

* Update

* Fixed dashboard

* fix

public/app/features/scenes/dashboard/DashboardScene.tsx

@@ -26,24 +26,15 @@ export class DashboardScene extends SceneObjectBase<DashboardSceneState> {
   public static Component = DashboardSceneRenderer;
   private urlSyncManager?: UrlSyncManager;
 
-  public activate() {
-    super.activate();
-  }
-
   /**
    * It's better to do this before activate / mount to not trigger unnessary re-renders
    */
   public initUrlSync() {
-    this.urlSyncManager = new UrlSyncManager(this);
-    this.urlSyncManager.initSync();
-  }
-
-  public deactivate() {
-    super.deactivate();
-
-    if (this.urlSyncManager) {
-      this.urlSyncManager!.cleanUp();
+    if (!this.urlSyncManager) {
+      this.urlSyncManager = new UrlSyncManager(this);
     }
+
+    this.urlSyncManager.initSync();
   }
 }