filter out null emissions during decryption (#13374)

apps/web/src/app/vault/individual-vault/vault-filter/services/vault-filter.service.ts

@@ -5,6 +5,7 @@ import {
   BehaviorSubject,
   combineLatest,
   combineLatestWith,
+  filter,
   firstValueFrom,
   map,
   Observable,
@@ -72,10 +73,12 @@ export class VaultFilterService implements VaultFilterServiceAbstraction {
         this._organizationFilter,
       ]),
     ),
+    filter(([folders, ciphers, org]) => !!ciphers), // ciphers may be null, meaning decryption is in progress. Ignore this emission
     switchMap(([folders, ciphers, org]) => {
       return this.filterFolders(folders, ciphers, org);
     }),
   );
+
   folderTree$: Observable<TreeNode<FolderFilter>> = this.filteredFolders$.pipe(
     map((folders) => this.buildFolderTree(folders)),
   );