fix(tests): update test_get_library_agents_success to include folder_id and include_root_only parameters

- Added `folder_id` and `include_root_only` parameters to the `test_get_library_agents_success` function to ensure comprehensive testing of library agent retrieval functionality.
- This change enhances the test coverage for scenarios involving folder-specific agent queries.

autogpt_platform/backend/backend/api/features/library/routes_test.py

@@ -115,6 +115,8 @@ async def test_get_library_agents_success(
         sort_by=library_model.LibraryAgentSort.UPDATED_AT,
         page=1,
         page_size=15,
+        folder_id=None,
+        include_root_only=False,
     )