fix: [skip e2e]metrics json tag unmarshall failed

[jaime0815]

issue: #38551

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@            Coverage Diff            @@
##             master   #38554   +/-   ##
=========================================
  Coverage          ?   80.96%           
=========================================
  Files             ?     1379           
  Lines             ?   194360           
  Branches          ?        0           
=========================================
  Hits              ?   157372           
  Misses            ?    31433           
  Partials          ?     5555           

Components	Coverage Δ
Client	75.27% <ø> (?)
Core	69.32% <ø> (?)
Go	83.00% <ø> (?)

Files with missing lines	Coverage Δ
pkg/util/metricsinfo/metrics_info.go	100.00% <ø> (ø)

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czs007, jaime0815

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