[Bug]: The type of the object returned by query_iterator is pymilvus.orm.iterator.QueryIterator object，which doesn't seem reasonable

[laurazhao0611]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

client = MilvusClient("http://10.102.6.111:19530")
res = client.query_iterator("test_collection", limit=10)
print(type(res))

response:
<class 'pymilvus.orm.iterator.QueryIterator'>

Expected Behavior

something like "pymilvus.client.search_iterator.SearchIteratorV2", should not include 'ORM' in it.

Steps/Code To Reproduce behavior

Environment details

- Hardware/Softward conditions (OS, CPU, GPU, Memory):
- Method of installation (Docker, or from source):
- Milvus version (v0.3.1, or v0.4.0):pymilvus: 2.6.0rc60
- Milvus configuration (Settings you made in `server_config.yaml`):

Anything else?

No response

[laurazhao0611]

/assign @XuanYang-cn