chore: skip wait for addons ready if addon list is empty

[shanshanying]

• fix [BUG] kbcli stucks in WAITING FOR ADDONS even though addon list is empty #622

[codecov-commenter]

Codecov Report

❌ Patch coverage is 11.11111% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.90%. Comparing base (8e2af87) to head (65f3f67).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/cmd/kubeblocks/install.go	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #623      +/-   ##
==========================================
- Coverage   41.91%   41.90%   -0.02%     
==========================================
  Files         184      184              
  Lines       24644    24651       +7     
==========================================
  Hits        10329    10329              
- Misses      13161    13168       +7     
  Partials     1154     1154              

Flag	Coverage Δ
unittests	41.90% <11.11%> (-0.02%)	⬇️

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[shanshanying]

/cherry-pick release-1.0

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kbcli/actions/runs/17237142957