[Bug]: mixcoord panic during rolling upgrade

[qixuan0212]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:v2.4.17-0fe4b2c7-1417  -> v2.4.17-nightly-1f8299f3-1430
- Deployment mode(standalone or cluster): cluster
- MQ type(rocksmq, pulsar or kafka): both    
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): 
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

milvus rolling upgrade: v2.4.17-0fe4b2c7-1417 -> v2.4.17-nightly-1f8299f3-1430

Expected Behavior

rolling upgrade no panic

Steps To Reproduce

rolling upgrade workflow:
https://cloud-workflow-api-new.gcp-us-west1.cloud-uat3.zilliz.com/dolphinscheduler/ui/projects/13091281804832/workflow/instances/2528584?code=13121652190400

Milvus Log

https://grafana-vdc-dev.zilliz.cc/explore?orgId=1&panes=%7B%22Vl9%22:%7B%22datasource%22:%22Zgl22j0Vk%22,%22queries%22:%5B%7B%22refId%22:%22A%22,%22expr%22:%22%7Bcluster%3D%5C%22uat-gcp-milvus-us-west1-1%5C%22,namespace%3D%5C%22milvus-in01-f414c8d4c63e51e%5C%22,pod%3D~%5C%22in01-f414c8d4c63e51e-milvus-.%2A%5C%22%7D%22,%22datasource%22:%7B%22type%22:%22loki%22,%22uid%22:%22Zgl22j0Vk%22%7D,%22editorMode%22:%22code%22,%22queryType%22:%22range%22%7D%5D,%22range%22:%7B%22from%22:%221733456718201%22,%22to%22:%221733457655468%22%7D%7D%7D&schemaVersion=1

Anything else?

N/A

[qixuan0212]

/assign @jaime0815

[binbinlv]

/unassign @yanliang567

[qixuan0212]

related with #38266

[qixuan0212]

pr merged, Verified and fixed.
milvus: 2.4-20241206-a5164756-393233b
rolling upgrade success