chore: support multi continuous backup and specified the continuous method in cluster.spec

[wangyelei]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 29.41176% with 36 lines in your changes missing coverage. Please review.

Project coverage is 60.44%. Comparing base (2b312c3) to head (c82f96d).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/dataprotection/backup/scheduler.go	0.00%	29 Missing ⚠️
.../apps/cluster/transformer_cluster_backup_policy.go	75.00%	4 Missing and 1 partial ⚠️
pkg/dataprotection/restore/utils.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8855      +/-   ##
==========================================
+ Coverage   60.29%   60.44%   +0.15%     
==========================================
  Files         382      382              
  Lines       46259    46310      +51     
==========================================
+ Hits        27893    27994     +101     
+ Misses      15682    15639      -43     
+ Partials     2684     2677       -7     

Flag	Coverage Δ
unittests	60.44% <29.41%> (+0.15%)	⬆️

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[wangyelei]

/cherry-pick release-1.0-beta

[apecloud-bot]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/12925905698