66391: expandedNodes (&loadingNode) is now retrieved/sent to the store

at component initialisation/destruction so the state of the tree persists
& documentation

src/app/community-list-page/community-list-page.routing.module.ts

@@ -5,6 +5,9 @@ import { CdkTreeModule } from '@angular/cdk/tree';
 import { CommunityListPageComponent } from './community-list-page.component';
 import { CommunityListService } from './community-list-service';
 
+/**
+ * RouterModule to help navigate to the page with the community list tree
+ */
 @NgModule({
   imports: [
     RouterModule.forChild([