test(web): align formatter stub with lint rules

web/src/lib/services/user-admin.service.spec.ts

@@ -29,7 +29,7 @@ describe('admin actions for active and deleted accounts', () => {
   });
 
   it('offers restoration with a valid date and hides edits for a deleted account', () => {
-    const format = vi.fn((key: string, _options?: unknown) => key);
+    const format = vi.fn((key: string, _?: unknown) => key);
     const user = { id: 'other', deletedAt: '2026-10-17T12:00:00Z', status: UserStatus.Deleted } as UserAdminResponseDto;
     const actions = getUserAdminActions(format as MessageFormatter, user);
     expect((actions.Restore.$if as () => boolean)()).toBe(true);