Refactor the native snapshot definition code.

[blackpiglet]

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Fixes #(issue)

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[codecov]

Codecov Report

Attention: Patch coverage is 92.30769% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 61.68%. Comparing base (67c06e6) to head (efb94ae).

Files	Patch %	Lines
pkg/cmd/util/output/backup_describer.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7544   +/-   ##
=======================================
  Coverage   61.68%   61.68%           
=======================================
  Files         263      263           
  Lines       28826    28826           
=======================================
  Hits        17781    17781           
  Misses       9787     9787           
  Partials     1258     1258           

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