fix: add Selective backupType

[gnolong]

fix #8475
ref #8472

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 60.46%. Comparing base (a68fb12) to head (4b605f0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/dataprotection/restore/utils.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8553      +/-   ##
==========================================
- Coverage   60.58%   60.46%   -0.12%     
==========================================
  Files         376      376              
  Lines       45679    45679              
==========================================
- Hits        27673    27621      -52     
- Misses      15424    15490      +66     
+ Partials     2582     2568      -14     

Flag	Coverage Δ
unittests	60.46% <50.00%> (-0.12%)	⬇️

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[zjx20]

Where will the value be used?

[gnolong]

Where will the value be used?

Database and table-level backups typically use parameters, using the concept of selective backup can make it easier for users to distinguish these backup methods from others. I will fix the usage of the value.

[zjx20]

I prefer not to add a new backup type as it doesn't affect the backup behavior. Users can set a specific backup name or add labels/annotations to distinguish backup methods.

@ldming What's your opinion?

[wangyelei]

I prefer not to add a new backup type as it doesn't affect the backup behavior. Users can set a specific backup name or add labels/annotations to distinguish backup methods.

@ldming What's your opinion?

if no specified backupType, how to set it? Full backups and continuous backups can be used together, these type is useful.