feat: conditional step execution

[hiddeco]

Fixes: #3125

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[codecov]

Codecov Report

Attention: Patch coverage is 64.58333% with 17 lines in your changes missing coverage. Please review.

Project coverage is 52.47%. Comparing base (fe65204) to head (63afbf1).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/directives/simple_engine_promote.go	62.50%	7 Missing and 2 partials ⚠️
internal/directives/promotions.go	69.56%	5 Missing and 2 partials ⚠️
internal/controller/promotions/promotions.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3485      +/-   ##
==========================================
+ Coverage   52.27%   52.47%   +0.20%     
==========================================
  Files         290      294       +4     
  Lines       26330    26696     +366     
==========================================
+ Hits        13764    14009     +245     
- Misses      11814    11917     +103     
- Partials      752      770      +18     

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