Add default value to empty sort preset

Signed-off-by: trivernis <trivernis@protonmail.com>

mediarepo-ui/src/api/models/SortKey.ts

@@ -30,9 +30,7 @@ export class SortKey {
             };
         } else {
             this.data = {
-                [value]: {
+                [value]: this.sortDirection
-                    direction: this.sortDirection
-                }
             } as SortKeyData;
         }
     }

mediarepo-ui/src/app/components/shared/sidebar/file-search/sort-dialog/sort-dialog.component.ts

@@ -20,7 +20,9 @@ export class SortDialogComponent implements OnInit {
     public sortingPreset: SortingPreset = SortingPreset.fromValues(-1, []);
     public availablePresets: SortingPreset[] = [];
     public suggestedNamespaces: Namespace[] = [];
-    public emptyPreset = SortingPreset.fromValues(-1, []);
+    public emptyPreset = SortingPreset.fromValues(-1, [
+        SortKey.fromValues("FileImportedTime", "Ascending", undefined)
+    ]);
 
     public previousId: number = -1;
     private namespaces: Namespace[] = [];