fix: erase pk empty check when pk index replace raw data (#30432)

[zhagnlu]

pr: #30432

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (be1bd96) 82.05% compared to head (29fdf3e) 82.14%.
Report is 1 commits behind head on 2.3.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.3   #30578      +/-   ##
==========================================
+ Coverage   82.05%   82.14%   +0.09%     
==========================================
  Files         841      831      -10     
  Lines      121958   121267     -691     
==========================================
- Hits       100074    99617     -457     
+ Misses      18643    18404     -239     
- Partials     3241     3246       +5     

Files	Coverage Δ
internal/core/src/segcore/SegmentSealedImpl.cpp	78.27% <100.00%> (+0.01%)	⬆️
internal/querynodev2/services.go	88.98% <100.00%> (ø)

... and 125 files with indirect coverage changes

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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