enhance: add a weight for growing row count when balancing segments

[sunby]

Cherry-pick from master
pr: #30271

[mergify]

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[mergify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d182a51) 82.09% compared to head (ae5e40a) 82.10%.

Additional details and impacted files

@@           Coverage Diff           @@
##              2.3   #30293   +/-   ##
=======================================
  Coverage   82.09%   82.10%           
=======================================
  Files         840      840           
  Lines      121034   121044   +10     
=======================================
+ Hits        99368    99388   +20     
+ Misses      18422    18415    -7     
+ Partials     3244     3241    -3     

Files	Coverage Δ
...ernal/querycoordv2/balance/score_based_balancer.go	95.71% <100.00%> (ø)
pkg/util/paramtable/component_param.go	98.33% <100.00%> (+<0.01%)	⬆️

... and 15 files with indirect coverage changes

[congqixia]

/run-cpu-e2e

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, sunby

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