test(memory): add qdrant_url/qdrant_api_key to expected config dict

The `qdrant-env-vars` change in d3c37d7 (PR #266) added `qdrant_url` and
`qdrant_api_key` keys to the kwargs that `MemoryHandler` passes into
`DirectMem0Adapter.__init__`. The corresponding assertion in
`test_ensure_initialized_fast_paths_and_qdrant_variants` was missed in that
PR and has been failing on `main` ever since. Surfacing here because it
fails on every PR's CI; not caused by the Rust tokenizer work this branch
adds.

The two new keys are both `None` when the corresponding `HEADROOM_QDRANT_*`
env vars are unset, which is the case in this test.

tests/test_memory_handler_native_ops.py

@@ -1289,8 +1289,10 @@ async def test_ensure_initialized_fast_paths_and_qdrant_variants(
     assert qdrant_handler.initialized is True
     assert seen["initialized"] is True
     assert seen["config"] == {
+        "qdrant_url": None,
         "qdrant_host": "localhost",
         "qdrant_port": 6333,
+        "qdrant_api_key": None,
         "neo4j_uri": "neo4j://localhost:7687",
         "neo4j_user": "neo4j",
         "neo4j_password": "password",