fix: merge sort segment loss data

[aoiasd]

relate: #37238

[mergify]

@aoiasd E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@aoiasd go-sdk check failed, comment rerun go-sdk can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 81.03%. Comparing base (b3de4b0) to head (f3b48d1).
Report is 16 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/datanode/compaction/merge_sort.go	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #37400      +/-   ##
==========================================
- Coverage   83.25%   81.03%   -2.23%     
==========================================
  Files        1015     1305     +290     
  Lines      157480   182857   +25377     
==========================================
+ Hits       131116   148172   +17056     
- Misses      21172    29483    +8311     
- Partials     5192     5202      +10     

Components	Coverage Δ
Client	∅ <ø> (∅)
Core	67.37% <ø> (∅)
Go	83.25% <0.00%> (-0.03%)	⬇️

Files with missing lines	Coverage Δ
internal/datanode/compaction/merge_sort.go	78.94% <0.00%> (-0.19%)	⬇️

... and 317 files with indirect coverage changes

[mergify]

@aoiasd go-sdk check failed, comment rerun go-sdk can trigger the job again.

[aoiasd]

rerun go-sdk

[aoiasd]

rerun go-sdk

[liliu-z]

/lgtm

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aoiasd, congqixia, liliu-z

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