fix: query iterator lack results(#33137) (#33422)

[MrPresent-Han]

related: #33137
pr: #33422

[mergify]

@MrPresent-Han 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.

[mergify]

@MrPresent-Han Please associate the related pr of master to the body of your Pull Request. (eg. “pr: #”)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.19%. Comparing base (8ff5d27) to head (b6e0ac5).
Report is 18 commits behind head on 2.4.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #33506      +/-   ##
==========================================
+ Coverage   82.15%   82.19%   +0.03%     
==========================================
  Files        1006      997       -9     
  Lines      128421   128637     +216     
==========================================
+ Hits       105510   105732     +222     
+ Misses      18934    18933       -1     
+ Partials     3977     3972       -5     

Files	Coverage Δ
internal/core/src/common/QueryResult.h	96.87% <ø> (-1.59%)	⬇️
...al/core/src/query/visitors/ExecPlanNodeVisitor.cpp	97.82% <100.00%> (-0.77%)	⬇️
internal/core/src/segcore/InsertRecord.h	90.98% <100.00%> (+0.14%)	⬆️
internal/core/src/segcore/SegmentGrowingImpl.h	81.03% <ø> (+0.67%)	⬆️
internal/core/src/segcore/SegmentInterface.cpp	88.13% <100.00%> (-0.24%)	⬇️
internal/core/src/segcore/SegmentInterface.h	100.00% <ø> (ø)
internal/core/src/segcore/SegmentSealedImpl.h	80.00% <ø> (ø)
internal/proxy/task_query.go	81.49% <100.00%> (-0.22%)	⬇️
internal/querynodev2/segments/result.go	74.41% <100.00%> (+0.36%)	⬆️
internal/querynodev2/tasks/query_task.go	91.83% <100.00%> (+0.08%)	⬆️
... and 1 more

... and 210 files with indirect coverage changes

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, MrPresent-Han

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Needs approval from an approver in each of these files:

• internal/core/OWNERS [congqixia]
• internal/proto/OWNERS [congqixia]
• internal/proxy/OWNERS [congqixia]
• internal/querynodev2/segments/OWNERS [congqixia]
• internal/querynodev2/tasks/OWNERS [congqixia]
• pkg/util/OWNERS [congqixia]

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