chore: validate inc backup's repo

[gnolong]

• incremental backup validates backup repo

[codecov]

Codecov Report

Attention: Patch coverage is 76.66667% with 7 lines in your changes missing coverage. Please review.

Project coverage is 60.44%. Comparing base (fd29cfe) to head (56a30c8).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/dataprotection/restore/utils.go	0.00%	4 Missing ⚠️
controllers/dataprotection/backup_controller.go	70.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8933      +/-   ##
==========================================
+ Coverage   60.23%   60.44%   +0.21%     
==========================================
  Files         389      389              
  Lines       47084    47131      +47     
==========================================
+ Hits        28362    28490     +128     
+ Misses      15999    15916      -83     
- Partials     2723     2725       +2     

Flag	Coverage Δ
unittests	60.44% <76.66%> (+0.21%)	⬆️

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[gnolong]

/cherry-pick release-0.9

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/13404768870

[wangyelei]

/cherry-pick release-1.0-beta

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/13405049168