[fix] Disable VPA for VPA (#1318)

The earlier PR was erroneously merged without including an amendment to
the existing commits, so now this amendment must be included as a
separate patch. See #1301 for details.

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## What this PR does


### Release note

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```release-note
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## Summary by CodeRabbit

* **Chores**
* Updated configuration structure by moving the `vpaForVPA` setting to a
top-level key in the default values for Vertical Pod Autoscaler. No
changes to configuration values or functionality.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/apps/kubernetes/templates/helmreleases/vertical-pod-autoscaler.yaml

@@ -3,8 +3,8 @@
 {{- $clusterDomain := (index $cozyConfig.data "cluster-domain") | default "cozy.local" }}
 {{- $myNS := lookup "v1" "Namespace" "" .Release.Namespace }}
 {{- $targetTenant := index $myNS.metadata.annotations "namespace.cozystack.io/monitoring" }}
+vpaForVPA: false
 vertical-pod-autoscaler:
-  vpaForVPA: false
   recommender:
     extraArgs:
       container-name-label: container