chore: fix check upgrade release status

[yipeng1030]

move checking upgrade release status from kubeblocks/upgrade() to helm/upgrade() and improve UT.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 71.42857% with 6 lines in your changes missing coverage. Please review.

Project coverage is 42.65%. Comparing base (9584c24) to head (f791f0c).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/util/helm/helm.go	71.42%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #492      +/-   ##
==========================================
- Coverage   42.66%   42.65%   -0.02%     
==========================================
  Files         172      172              
  Lines       23276    23285       +9     
==========================================
+ Hits         9931     9932       +1     
- Misses      12210    12216       +6     
- Partials     1135     1137       +2     

Flag	Coverage Δ
unittests	42.65% <71.42%> (-0.02%)	⬇️

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[yipeng1030]

/cherry-pick release-1.0

[github-actions]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kbcli/actions/runs/11946298958