Fix #5532: fix de spec

Author: guillermo-escire

src/app/item-page/edit-item-page/simple-item-action/abstract-simple-item-action.component.spec.ts

@@ -89,6 +89,7 @@ describe('AbstractSimpleItemActionComponent', () => {
         },
       },
     });
+    routerStub.navigateByUrl = jasmine.createSpy('navigateByUrl');
 
     mockItemDataService = jasmine.createSpyObj({
       findById: createSuccessfulRemoteDataObject$(mockItem),

src/app/item-page/edit-item-page/simple-item-action/abstract-simple-item-action.component.ts

@@ -69,7 +69,7 @@ export class AbstractSimpleItemActionComponent implements OnInit {
 
   ngOnInit(): void {
     const previousUrl = this.router.lastSuccessfulNavigation?.previousNavigation?.finalUrl?.toString();
-    this.returnUrl = previousUrl ?? getItemEditRoute(this.item);
+    this.returnUrl = previousUrl ?? null;
 
     this.itemRD$ = this.route.data.pipe(
       map((data) => data.dso),