[AC-2499] Add permission checks on bulk actions menu (#8912)

* Add permission checks for org vault bulk actions

* Show checkboxes for all collections except Unassigned

* Separate individual and admin logic between CollectionView
  and CollectionAdminView

* Remove heading for error toasts per design feedback

apps/web/src/app/vault/components/vault-items/vault-collection-row.component.ts

@@ -90,4 +90,12 @@ export class VaultCollectionRowComponent {
   protected deleteCollection() {
     this.onEvent.next({ type: "delete", items: [{ collection: this.collection }] });
   }
+
+  protected get showCheckbox() {
+    if (this.flexibleCollectionsV1Enabled) {
+      return this.collection?.id !== Unassigned;
+    }
+
+    return this.canDeleteCollection;
+  }
 }