chore: optional secret-ref namespace for system account

[leon-inf]

close #9968

[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.

Example:
  - /nopick
  - /pick release-1.0

[leon-inf]

/pick release-1.0

[codecov]

Codecov Report

❌ Patch coverage is 77.77778% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.18%. Comparing base (0fa7766) to head (c859585).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...rs/apps/component/transformer_component_account.go	77.77%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9971      +/-   ##
==========================================
+ Coverage   51.07%   51.18%   +0.11%     
==========================================
  Files         541      541              
  Lines       58330    58335       +5     
==========================================
+ Hits        29794    29861      +67     
+ Misses      25578    25534      -44     
+ Partials     2958     2940      -18     

Flag	Coverage Δ
unittests	51.18% <77.77%> (+0.11%)	⬆️

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[leon-inf]

/approve

[apecloud-bot]

/cherry-pick release-1.0

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/20591020705