fix: [2.4]Check if the dynamic fields contain any static fields

[xiaocai2333]

issue: #38024

master pr: #38025

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/run-cpu-e2e

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/run-cpu-e2e

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/run-cpu-e2e

[xiaocai2333]

/run-cpu-e2e

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.62%. Comparing base (a71d49d) to head (2842b6e).
Report is 4 commits behind head on 2.4.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #38027      +/-   ##
==========================================
- Coverage   80.63%   80.62%   -0.02%     
==========================================
  Files        1070     1070              
  Lines      167554   167552       -2     
==========================================
- Hits       135114   135092      -22     
- Misses      28017    28031      +14     
- Partials     4423     4429       +6     

Files with missing lines	Coverage Δ
internal/proxy/util.go	90.82% <100.00%> (+0.05%)	⬆️
internal/proxy/validate_util.go	87.07% <ø> (-0.27%)	⬇️

... and 33 files with indirect coverage changes

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/run-cpu-e2e

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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