[cherry-pick]Add security hub API test case

[YangJiao0817]

Fix #19269

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

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• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
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• Made sure tests are passing and test coverage is added if needed.
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[codecov]

Codecov Report

Merging #19377 (e365e54) into release-2.9.0 (0b9645d) will increase coverage by 0.02%.
Report is 1 commits behind head on release-2.9.0.
The diff coverage is n/a.

@@                Coverage Diff                @@
##           release-2.9.0   #19377      +/-   ##
=================================================
+ Coverage          67.39%   67.41%   +0.02%     
=================================================
  Files                993      993              
  Lines             108921   108921              
  Branches            2752     2752              
=================================================
+ Hits               73403    73426      +23     
+ Misses             31573    31546      -27     
- Partials            3945     3949       +4     

Flag	Coverage Δ
unittests	67.41% <ø> (+0.02%)	⬆️

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see 10 files with indirect coverage changes

[AllForNothing]

lgtm