fix: NPE when adding a new service port

[leon-inf]

fix #8802

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 60.52%. Comparing base (982672d) to head (ce23e4f).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
controllers/apps/component/utils.go	0.00%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8820      +/-   ##
==========================================
+ Coverage   60.34%   60.52%   +0.17%     
==========================================
  Files         381      381              
  Lines       46215    46216       +1     
==========================================
+ Hits        27889    27972      +83     
+ Misses      15654    15576      -78     
+ Partials     2672     2668       -4     

Flag	Coverage Δ
unittests	60.52% <50.00%> (+0.17%)	⬆️

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[leon-inf]

/approve

[leon-inf]

/cherry-pick release-1.0-beta

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/12862923325