enhance: skip load bm25 sparse row data

[aoiasd]

Skip load row data of bm25 sparse field, because it's forbidden to return.

[codecov]

Codecov Report

Attention: Patch coverage is 23.07692% with 20 lines in your changes missing coverage. Please review.

Project coverage is 80.99%. Comparing base (228bff5) to head (3bb9719).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/querynodev2/segments/segment_loader.go	0.00%	14 Missing ⚠️
internal/querynodev2/segments/segment.go	50.00%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #39078       +/-   ##
===========================================
+ Coverage   69.48%   80.99%   +11.51%     
===========================================
  Files         300     1408     +1108     
  Lines       26904   198585   +171681     
===========================================
+ Hits        18693   160842   +142149     
- Misses       8211    32076    +23865     
- Partials        0     5667     +5667     

Components	Coverage Δ
Client	79.50% <ø> (∅)
Core	69.48% <ø> (ø)
Go	82.93% <23.07%> (∅)

Files with missing lines	Coverage Δ
internal/querynodev2/segments/segment.go	67.46% <50.00%> (ø)
internal/querynodev2/segments/segment_loader.go	70.89% <0.00%> (ø)

... and 1106 files with indirect coverage changes

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[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: aoiasd
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[aoiasd]

/run-cpu-e2e

[aoiasd]

rerun go-sdk