⚠️ Remove Migrated reason from ClusterExtensionRevision Available condition

[perdasilva]

Description

Removes the Migrated reason from the ClusterExtensionRevision Available condition. It would be short-lived and it makes more sense to let the revision controller set the conditions. If there is need to call out migration, we could set an annotation on the revision resource.

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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[Copilot]

Pull request overview

This PR removes the transient "Migrated" reason from the ClusterExtensionRevision Available condition during storage migration from Helm to ClusterExtensionRevision. The change simplifies the migration flow by allowing the revision controller to manage all condition states uniformly, rather than having the migrator set a short-lived condition.

• Removed the ClusterExtensionRevisionReasonMigrated constant from the API types
• Eliminated status condition update code in the migration flow that set Available=Unknown with reason "Migrated"
• Simplified the BoxcutterStorageMigrator.Migrate() method by removing the post-creation status update logic

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
api/v1/clusterextensionrevision_types.go	Removed the unused ClusterExtensionRevisionReasonMigrated constant from condition reasons
internal/operator-controller/applier/boxcutter.go	Removed code that sets Available=Unknown status condition after creating a migrated revision, along with the subsequent status update and re-fetch operations

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.81%. Comparing base (d44cbaf) to head (7643dc4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2374      +/-   ##
==========================================
+ Coverage   72.26%   74.81%   +2.55%     
==========================================
  Files          95       95              
  Lines        7336     7327       -9     
==========================================
+ Hits         5301     5482     +181     
+ Misses       1631     1410     -221     
- Partials      404      435      +31     

Flag	Coverage Δ
e2e	44.91% <ø> (?)
experimental-e2e	49.33% <ø> (+<0.01%)	⬆️
unit	58.79% <ø> (-0.03%)	⬇️

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