[AC-2071] Fix bulk collection access API call (#7681)

* Fix HTTP error when bulk editing collection access

Add missing forward slash in URL string

* Only show bulk collection access if using FC

apps/web/src/app/vault/core/collection-admin.service.ts

@@ -91,7 +91,7 @@ export class CollectionAdminService {
 
     await this.apiService.send(
       "POST",
-      `organizations/${organizationId}/collections/bulk-access`,
+      `/organizations/${organizationId}/collections/bulk-access`,
       request,
       true,
       false,

apps/web/src/app/vault/org-vault/vault.component.html

@@ -55,7 +55,9 @@
         [cloneableOrganizationCiphers]="true"
         [showAdminActions]="true"
         (onEvent)="onVaultItemsEvent($event)"
-        [showBulkEditCollectionAccess]="showBulkEditCollectionAccess$ | async"
+        [showBulkEditCollectionAccess]="
+          (showBulkEditCollectionAccess$ | async) && organization?.flexibleCollections
+        "
         [viewingOrgVault]="true"
       >
       </app-vault-items>