enhance: skip orphan channel cp meta when checking cp lag

[jaime0815]

issue: #34545
pr: #34555

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.91%. Comparing base (f0d12aa) to head (d25edd2).
Report is 5 commits behind head on 2.4.

Additional details and impacted files

@@             Coverage Diff             @@
##              2.4   #34556       +/-   ##
===========================================
- Coverage   84.42%   69.91%   -14.52%     
===========================================
  Files         786     1051      +265     
  Lines      112476   135849    +23373     
===========================================
+ Hits        94959    94978       +19     
- Misses      13308    36666    +23358     
+ Partials     4209     4205        -4     

Files	Coverage Δ
internal/datacoord/util.go	98.78% <100.00%> (+0.05%)	⬆️
pkg/util/funcutil/func.go	91.80% <100.00%> (+0.22%)	⬆️

... and 295 files with indirect coverage changes

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jaime0815, xiaofan-luan

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