Update Kafka deployment docs to use accessible SolDevelo Helm chart

Hi,

I noticed that the Remote WAL documentation instructs users to deploy Kafka using `oci://registry-1.docker.io/bitnamicharts/kafka`.

**The Problem**
Bitnami has restricted public access to many of their artifacts, and users frequently encounter rate limits or access issues when pulling from the `bitnamicharts` namespace on Docker Hub without specific authentication. This can cause friction for users trying to follow your deployment guides.

**Proposed Solution**
I suggest updating the instructions to use **`soldevelo/kafka-chart`**.
This chart is a production-ready, actively maintained fork of the Bitnami chart. It is fully compatible with your existing configuration files (e.g., `kafka.yaml`) but is free from the access/rate-limit restrictions often associated with the upstream artifacts.

**Suggested Change**
In `docs/user-guide/deployments-administration/wal/remote-wal/manage-kafka.md` (and related versioned/translated files):

```bash
# Old
helm upgrade --install kafka \
oci://registry-1.docker.io/bitnamicharts/kafka \
--values kafka.yaml \
--version 32.4.3 \
--create-namespace \

# New
helm upgrade --install kafka \
oci://registry-1.docker.io/soldevelo/kafka-chart \
--values kafka.yaml \
--version 32.4.4 \
--create-namespace \