fix: restore original volume mount configuration for Radarr and Sonarr

- Use original volumes/volumeMounts structure instead of persistence
- Mount plex-data PVC to /config with correct subPath
- Restore exact working configuration from before ArgoCD migration

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

helm-values/sonarr_values.yaml

@@ -18,14 +18,16 @@ service:
   type: ClusterIP
   port: 8989
 
-persistence:
-  config:
-    enabled: true
-    existingClaim: "plex-data"
+volumes:
+  - name: plex-data
+    persistentVolumeClaim:
+      claimName: "plex-data"
+
+volumeMounts:
+  - name: plex-data
+    mountPath: "/config"
     subPath: "configs/sonarr"
-  media:
-    enabled: true
-    existingClaim: "plex-data"
+  - name: "plex-data"
     mountPath: "/nfs"
 
 resources: