🐛 Restore ManagedFields to operator-controller cache

[tmshort]

The Boxcutter library uses ManagedFields internally, so we need to keep them around, at least in operator-controller. Catalogd can still strip them from its cache.

Description

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[perdasilva]

/approve

[openshift-ci]

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[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 74.26%. Comparing base (b3f85d5) to head (6b927e9).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/operator-controller/applier/boxcutter.go	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2318      +/-   ##
==========================================
+ Coverage   71.14%   74.26%   +3.11%     
==========================================
  Files          91       91              
  Lines        7046     7057      +11     
==========================================
+ Hits         5013     5241     +228     
+ Misses       1618     1402     -216     
+ Partials      415      414       -1     

Flag	Coverage Δ
e2e	45.89% <50.00%> (-0.05%)	⬇️
experimental-e2e	48.25% <75.00%> (?)
unit	58.50% <12.50%> (-0.08%)	⬇️

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[oceanc80]

/lgtm