enhance: do not log out the full req(#36546)

[smellthemoon]

pr: #36546

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.59%. Comparing base (cffde80) to head (cc90847).
Report is 18 commits behind head on 2.4.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #37948      +/-   ##
==========================================
- Coverage   80.65%   80.59%   -0.06%     
==========================================
  Files        1069     1069              
  Lines      166972   166979       +7     
==========================================
- Hits       134669   134585      -84     
- Misses      27908    27973      +65     
- Partials     4395     4421      +26     

Files with missing lines	Coverage Δ
...nternal/distributed/proxy/httpserver/handler_v2.go	91.87% <100.00%> (ø)

... and 45 files with indirect coverage changes

[smellthemoon]

rerun ut

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, smellthemoon

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