docs(velero): correct the stale upgradeCRDs disable rationale

The comment justified upgradeCRDs: false by a kubectl-image-compatibility
problem in the upgrade-crds Job. That rationale is obsolete in velero 12.x:
the Job now runs the velero image natively, not a kubectl image. The real,
current reason the Job stays disabled is that CRDs ship via the chart's
crds/ directory, making the Job redundant. Correct both the values.yaml
override comment and the helm-unittest comment to match.

Assisted-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>

packages/system/velero/tests/velero_test.yaml

@@ -26,9 +26,11 @@ tests:
           path: spec.template.spec.initContainers[1].image
           value: quay.io/kubevirt/kubevirt-velero-plugin:v0.9.0
 
-  # Cozystack disables the upgrade-crds Job (upgradeCRDs: false) because the
-  # job has kubectl-image compatibility issues; CRDs ship via the chart's
-  # crds/ directory instead. Pin that invariant — it silently regressed once.
+  # Cozystack disables the upgrade-crds Job (upgradeCRDs: false) because CRDs
+  # ship via the chart's crds/ directory, making the Job redundant. (The old
+  # kubectl-image-compatibility rationale is obsolete in velero 12.x, where the
+  # Job now runs the velero image natively.) Pin that invariant — it silently
+  # regressed once.
   - it: does not emit the upgrade-crds Job when upgradeCRDs is disabled
     template: charts/velero/templates/upgrade-crds/upgrade-crds.yaml
     asserts:

packages/system/velero/values.yaml

@@ -1,6 +1,8 @@
 velero:
-  # Disable CRD upgrade job - CRDs are installed as part of helm chart
-  # The upgrade job has issues with kubectl image compatibility
+  # Disable the upgrade-crds Job: CRDs ship via the chart's crds/ directory, so
+  # the Job is redundant. (The old kubectl-image-compatibility rationale is
+  # obsolete in velero 12.x — the Job now runs the velero image natively, not a
+  # kubectl one — but it stays disabled because cozystack manages CRDs via crds/.)
   upgradeCRDs: false
   initContainers:
     - name: velero-plugin-for-aws