[cherry-pick]Add Retain image last pull time UI test case

[YangJiao0817]

Fix #18690

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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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[codecov]

Codecov Report

Merging #18696 (92e7ddd) into release-2.8.0 (31baf31) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@                Coverage Diff                @@
##           release-2.8.0   #18696      +/-   ##
=================================================
- Coverage          67.38%   67.35%   -0.03%     
=================================================
  Files                984      984              
  Lines             107006   107006              
  Branches            2670     2670              
=================================================
- Hits               72105    72074      -31     
- Misses             31020    31049      +29     
- Partials            3881     3883       +2     

Flag	Coverage Δ
unittests	67.35% <ø> (-0.03%)	⬇️

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see 11 files with indirect coverage changes