Chore: add special field name test case

[iyear]

Description of your changes

Part of #5364

Add a test case

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.02 ⚠️

Comparison is base (57dd6d1) 61.64% compared to head (28ab675) 61.63%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5826      +/-   ##
==========================================
- Coverage   61.64%   61.63%   -0.02%     
==========================================
  Files         217      217              
  Lines       30745    30745              
==========================================
- Hits        18954    18950       -4     
- Misses      10048    10049       +1     
- Partials     1743     1746       +3     

Flag	Coverage Δ
core-unittests	55.83% <ø> (+0.01%)	⬆️
e2e-multicluster-test	25.66% <ø> (-0.13%)	⬇️
e2e-rollout-tests	22.26% <ø> (-0.06%)	⬇️
e2etests	28.15% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 9 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.