PERF(code-server): reduce code-server PVC size and

- Reduce PVC size from 20Gi to 5Gi
- Revert storageClass from longhorn to local-path due to storage constraints
- Keep Gitea on longhorn, other apps on local-path

code-server/helm-values/code-server.yaml

@@ -9,8 +9,8 @@ image:
 persistence:
   enabled: true
   accessMode: ReadWriteOnce
-  size: 20Gi
+  size: 5Gi
-  storageClassName: longhorn  # Migrated from local-path to Longhorn (replica=3)
+  storageClassName: local-path  # Reverted from longhorn due to storage constraints
 
 # Use existing secret for password
 existingSecret: code-server-password