fix: do not select the replicas being scaled as the data source

[leon-inf]

close #9579

[apecloud-bot]

Auto Cherry-pick Instructions

Usage:
  - /nopick: Not auto cherry-pick when PR merged.
  - /pick: release-x.x [release-x.x]: Auto cherry-pick to the specified branch when PR merged.

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  - /nopick
  - /pick release-1.0

[leon-inf]

/pick release-1.0

[codecov]

Codecov Report

❌ Patch coverage is 54.54545% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.01%. Comparing base (65b4a2d) to head (bb8dd2d).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...ps/component/transformer_component_workload_ops.go	54.54%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9639      +/-   ##
==========================================
+ Coverage   59.90%   60.01%   +0.11%     
==========================================
  Files         518      518              
  Lines       56606    56610       +4     
==========================================
+ Hits        33908    33974      +66     
+ Misses      19649    19591      -58     
+ Partials     3049     3045       -4     

Flag	Coverage Δ
unittests	60.01% <54.54%> (+0.11%)	⬆️

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[apecloud-bot]

/cherry-pick release-1.0

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/17130686165