[Bug]: trace not check valid in querynode using it.

[zhagnlu]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:
- Deployment mode(standalone or cluster):
- MQ type(rocksmq, pulsar or kafka):    
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): 
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

when user not set trace exporter, querynode using this tracer and not check trace id valid or not. causing querynode coredump
core code:

not check valid and convert null value to uint8_t*.

Expected Behavior

No response

Steps To Reproduce

No response

Milvus Log

No response

Anything else?

No response

[zhagnlu]

/assign @yah01

[yanliang567]

/unassign

[yah01]

/assign @MrPresent-Han
/unassign

[yah01]

same as #26754

[stale]

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