[flux] Close Flux Operator ports to external access

This patch updates the Flux Operator Deployment to remove hostPort and hostNetwork,
ensuring that ports 8080 and 8081 are only accessible within the cluster.
This prevents external exposure and improves security.

```release-note
[flux] Close Flux Operator ports (8080/8081) to external access for improved security.
```

Signed-off-by: IvanHunters <xorokhotnikov@gmail.com>

packages/system/fluxcd-operator/values.yaml

@@ -4,7 +4,7 @@ flux-operator:
     - key: node.kubernetes.io/not-ready
       operator: Exists
       effect: NoSchedule
-  hostNetwork: true
+  hostNetwork: false
   resources:
     limits:
       cpu: 100m