chore: rollback service account name when upgrading componentdefinition

[cjc7373]

In #8328, pod's serviceaccount name has been changed to kb-{cmpdName} so that pods with the same cmpd can share one serviceaccount. However, this leads to a problem that when upgrading a component's cmpd (by changing the .spec.compDef field in component object), it will trigger a pod restart since serviceaccount has changed.

To avoid pod restarting, we can rollback a serviceaccount change if the underlying policyrules do not change.

An alternate solution is to change the serviceaccount name rule back to kb-{clusterName}-{componentName}. But this way can lead to a pod restart to all existing clusters.

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[codecov]

Codecov Report

❌ Patch coverage is 76.47059% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.12%. Comparing base (605b802) to head (96045af).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...llers/apps/component/transformer_component_rbac.go	75.00%	6 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9518      +/-   ##
==========================================
+ Coverage   59.60%   60.12%   +0.52%     
==========================================
  Files         551      551              
  Lines       59739    60326     +587     
==========================================
+ Hits        35607    36274     +667     
+ Misses      20888    20768     -120     
- Partials     3244     3284      +40     

Flag	Coverage Δ
unittests	60.12% <76.47%> (+0.52%)	⬆️

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