[DURACOM-453] handle errors on missing security settings endpoint

Author: FrancescoMolinaro

src/app/dso-shared/dso-edit-metadata/dso-edit-metadata.component.ts

@@ -50,6 +50,7 @@ import {
   Subscription,
 } from 'rxjs';
 import {
+  catchError,
   map,
   switchMap,
   tap,
@@ -241,6 +242,7 @@ export class DsoEditMetadataComponent implements OnInit, OnDestroy {
         map((securitySettingsRD: RemoteData<MetadataSecurityConfiguration>) => {
           return securitySettingsRD.hasSucceeded ? securitySettingsRD.payload : null;
         }),
+        catchError(() => of(null)),
       );
     } else {
       return of(null);

src/app/shared/menu/providers/edit-item-details.menu.ts

@@ -15,8 +15,10 @@ import { EditItemDataService } from '@dspace/core/submission/edititem-data.servi
 import { EditItemMode } from '@dspace/core/submission/models/edititem-mode.model';
 import { URLCombiner } from '@dspace/core/url-combiner/url-combiner';
 import {
+  catchError,
   map,
   Observable,
+  of,
 } from 'rxjs';
 
 import { getEditItemPageRoute } from '../../../app-routing-paths';
@@ -52,6 +54,7 @@ export class EditItemDetailsMenuProvider extends DSpaceObjectPageMenuProvider {
           };
         });
       }),
+      catchError(() => of([])),
     );
   }