Unbind app-protect from -preview-policies

[galitskiy]

Proposed changes

Unbind app-protect from -preview-policies.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto master
• I will ensure my PR is targeting the master branch and pulling from my branch from my own fork

[codecov-commenter]

Codecov Report

Merging #2237 (49fda13) into master (cb8a7f1) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 49fda13 differs from pull request most recent head 4e47507. Consider uploading reports for the commit 4e47507 to get more accurate results

@@            Coverage Diff             @@
##           master    #2237      +/-   ##
==========================================
- Coverage   53.41%   53.35%   -0.06%     
==========================================
  Files          43       43              
  Lines       13413    13409       -4     
==========================================
- Hits         7164     7154      -10     
- Misses       6020     6024       +4     
- Partials      229      231       +2     

Impacted Files	Coverage Δ
pkg/apis/configuration/validation/policy.go	95.39% <ø> (-0.05%)	⬇️
...ternal/k8s/appprotect/app_protect_configuration.go	86.16% <0.00%> (-0.58%)	⬇️
internal/k8s/configuration.go	95.65% <0.00%> (-0.39%)	⬇️

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