enhance: avoid the repeated metric info in the proxy

[SimFG]

issue: #30577

[mergify]

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[SimFG]

/run-cpu-e2e

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[codecov]

Codecov Report

Attention: Patch coverage is 85.43689% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 81.74%. Comparing base (184d800) to head (4f129d7).
Report is 21 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #32380      +/-   ##
==========================================
+ Coverage   81.66%   81.74%   +0.08%     
==========================================
  Files         999      999              
  Lines      124004   124007       +3     
==========================================
+ Hits       101266   101369     +103     
+ Misses      18856    18758      -98     
+ Partials     3882     3880       -2     

Files	Coverage Δ
internal/proxy/impl.go	86.48% <100.00%> (ø)
pkg/util/ratelimitutil/rate_collector.go	89.47% <80.00%> (ø)
internal/rootcoord/quota_center.go	88.68% <84.33%> (+0.38%)	⬆️

... and 36 files with indirect coverage changes

[mergify]

@SimFG E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[SimFG]

/run-cpu-e2e

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• internal/proxy/OWNERS [xiaofan-luan]
• internal/rootcoord/OWNERS [xiaofan-luan]
• pkg/util/OWNERS [xiaofan-luan]

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