enhance: add expr filter ratio monitor params

[zhagnlu]

pr: #41402

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@zhagnlu Thanks for your contribution. Please submit with DCO, see the contributing guide https://github.com/milvus-io/milvus/blob/master/CONTRIBUTING.md#developer-certificate-of-origin-dco.

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• internal/core/OWNERS [czs007]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.89%. Comparing base (8f2ccc2) to head (66bb164).
Report is 11 commits behind head on 2.5.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.5   #41403      +/-   ##
==========================================
- Coverage   82.66%   80.89%   -1.77%     
==========================================
  Files        1114     1421     +307     
  Lines      173584   203318   +29734     
==========================================
+ Hits       143485   164470   +20985     
- Misses      24335    33076    +8741     
- Partials     5764     5772       +8     

Components	Coverage Δ
Client	79.65% <ø> (ø)
Core	70.68% <100.00%> (∅)
Go	82.77% <ø> (-0.02%)	⬇️

Files with missing lines	Coverage Δ
internal/core/src/exec/operator/FilterBitsNode.cpp	93.22% <100.00%> (ø)
internal/core/src/monitor/prometheus_client.h	100.00% <ø> (ø)

... and 335 files with indirect coverage changes

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[czs007]

/lgtm