Add notation sign artifact API test case

[YangJiao0817]

Fix #19545

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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"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

Merging #19549 (01fca7f) into main (b8f65bb) will decrease coverage by 22.66%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             main   #19549       +/-   ##
===========================================
- Coverage   67.50%   44.85%   -22.66%     
===========================================
  Files         988      243      -745     
  Lines      108777    13354    -95423     
  Branches     2737     2737               
===========================================
- Hits        73433     5990    -67443     
+ Misses      31379     7060    -24319     
+ Partials     3965      304     -3661     

Flag	Coverage Δ
unittests	44.85% <ø> (-22.66%)	⬇️

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see 749 files with indirect coverage changes

[chlins]

lgtm