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## What this PR does
Bug: Changes to Tenant `tenant-root` will be dropped on next force (or
upgrade) reconciliation of `cosystack-basics` HelmRelease. This may lead
to data loss and outage of service
This PR fixes such behavior preserving values, applied by the user
### Release note
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```release-note
[cozystack-basics] Preserve existing `HelmRelease` values of `tenant-root` during reconciliations
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed cluster configuration to preserve existing settings during
updates instead of overwriting them. The system now properly merges new
configuration with prior values, ensuring no settings are unexpectedly
lost.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Andrei Kvapil
16db457536