chore: remove external preflight api

[ldming]

• fix [Improvement] remove the external preflight apis #10107

[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.

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  - /nopick
  - /pick release-1.1

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.73%. Comparing base (4ec0147) to head (585ae8f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10108      +/-   ##
==========================================
+ Coverage   51.57%   51.73%   +0.16%     
==========================================
  Files         525      525              
  Lines       58243    58243              
==========================================
+ Hits        30036    30131      +95     
+ Misses      25239    25155      -84     
+ Partials     2968     2957      -11     

Flag	Coverage Δ
unittests	51.73% <ø> (+0.16%)	⬆️

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[apecloud-bot]

/cherry-pick release-1.1

[apecloud-bot]

/cherry-pick release-1.0

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/23636485684

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/23636485841