[Bug]: [privilege_group] The error message is wrong when input invalid "db_name" for "grant_v2" interface

[binbinlv]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version: master-20241125-0b9edb62-amd64
- Deployment mode(standalone or cluster): both
- MQ type(rocksmq, pulsar or kafka):    all
- SDK version(e.g. pymilvus v2.0.0rc2): 2.5.0rc126
- OS(Ubuntu or CentOS): 
- CPU/Memory: 
- GPU: 
- Others: 

Current Behavior

The error message is wrong when input invalid "db_name" for "grant_v2" interface:

role.grant_v2(privilege="CollectionReadWrite", db_name="$%", collection_name="binbin")
code=1100, message=the first character of role name must be an underscore or letter: invalid parameter[expected=95][actual=36]

input invalid "db_name", but it reports "role name"...

Expected Behavior

Invalid db_name: $%. the first character of a db name must be an underscore or letter: invalid parameter

Steps To Reproduce

from pymilvus import connections
connections.connect(host="", user="", password="")
from pymilvus import Role
role = Role("binbin_new")
role.grant_v2(privilege="CollectionReadWrite", db_name="$%", collection_name="binbin")

Milvus Log

No response

Anything else?

No response

[binbinlv]

/assign @shaoting-huang

[shaoting-huang]

/assign

[yanliang567]

/assign @shaoting-huang
/unassign

[shaoting-huang]

fix:

the first character of a database name must be an underscore or letter: invalid database name[database=$%]

[binbinlv]

Verified and fixed in dev branch.
milvus: shaoting-huang-rbacv2fix-df5df8d-20241125
pymilvus: 2.5.0rc126

results:

pymilvus.exceptions.MilvusException: <MilvusException: (code=802, message=the first character of a database name must be an underscore or letter: invalid database name[database=$%])>

[binbinlv]

Close it first, and will reopen it if there are any errors on the master image when the fix pr is merged.