enhance: the proxy metric in the query request

[SimFG]

/kind improvement
issue: #33306

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.09%. Comparing base (32d3e22) to head (a56eaa4).
Report is 17 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #33307      +/-   ##
==========================================
+ Coverage   82.07%   82.09%   +0.02%     
==========================================
  Files        1003     1012       +9     
  Lines      128993   128852     -141     
==========================================
- Hits       105869   105781      -88     
+ Misses      19138    19094      -44     
+ Partials     3986     3977       -9     

Files	Coverage Δ
internal/proxy/impl.go	86.24% <100.00%> (-0.16%)	⬇️
internal/proxy/util.go	89.83% <100.00%> (-0.12%)	⬇️

... and 243 files with indirect coverage changes

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[xiaofan-luan]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: SimFG, xiaofan-luan

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