fix: [2.4] Querycoord will trigger unexpected balance task after restart

[weiliu1031]

issue: #38606
pr: #38630

[codecov]

Codecov Report

Attention: Patch coverage is 82.35294% with 6 lines in your changes missing coverage. Please review.

Project coverage is 79.52%. Comparing base (648078e) to head (12eb029).
Report is 1 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/querycoordv2/meta/target.go	66.66%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #38714      +/-   ##
==========================================
- Coverage   83.40%   79.52%   -3.89%     
==========================================
  Files         809     1077     +268     
  Lines      143068   169590   +26522     
==========================================
+ Hits       119333   134859   +15526     
- Misses      19243    30242   +10999     
+ Partials     4492     4489       -3     

Files with missing lines	Coverage Δ
internal/querycoordv2/checkers/balance_checker.go	96.26% <100.00%> (+0.30%)	⬆️
internal/querycoordv2/meta/target_manager.go	91.54% <100.00%> (+1.35%)	⬆️
internal/querycoordv2/meta/target.go	89.74% <66.66%> (-4.60%)	⬇️

... and 300 files with indirect coverage changes

[tedxu]

/lgtm

[tedxu]

There is no need to log all collections here.

[chyezh]

/lgtm

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: weiliu1031, xiaofan-luan

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Needs approval from an approver in each of these files:

• internal/proto/OWNERS [xiaofan-luan]
• internal/querycoordv2/balance/OWNERS [xiaofan-luan]
• internal/querycoordv2/checkers/OWNERS [xiaofan-luan]
• internal/querycoordv2/meta/OWNERS [xiaofan-luan]

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