[KYUUBI #6884][FOLLOWUP] Fix internal kyuubi instance ping failure

[turboFei]

Why are the changes needed?

To fix failure:

:2025-12-07 13:40:40.747 ERROR [KyuubiRestFrontendService-134] org.apache.kyuubi.server.api.v1.InternalRestClient: (Ping to internal Kyuubi instance:{}  failed,kyuubistaging-1.kyuubistaginghl.kyuubi-prod.svc.166.tess.io:10011,java.lang.IllegalArgumentException: requirement failed: The auth user shall be not null)

In this PR, it will use the authUser and client ipAddress for internal ping.

How was this patch tested?

Integration testing.

Was this patch authored or co-authored using generative AI tooling?

No.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (fba1f94) to head (198dc61).

Files with missing lines	Patch %	Lines
...ache/kyuubi/server/api/v1/InternalRestClient.scala	0.00%	8 Missing ⚠️
...ain/java/org/apache/kyuubi/client/BaseRestApi.java	0.00%	2 Missing ⚠️
.../apache/kyuubi/server/api/v1/BatchesResource.scala	0.00%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #7264   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files         696     696           
  Lines       43530   43537    +7     
  Branches     5883    5885    +2     
======================================
- Misses      43530   43537    +7     

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[turboFei]

thanks, merged to 1.11.0