node-sdk: deserializeVoidResponse now ignores payload length for all void commands

[atharvalade]

Problem

deserializeVoidResponse was changed from:

• status === 0 && data.length === 0
  to:
• status === 0

This applies to all void commands, not just SendMessages.

Why this is critical

This removes a useful protocol safety check.
Malformed or unexpected payloads for void commands are now silently accepted.

Where

• foreign/node/src/client/client.utils.ts

Expected

Keep strict empty-payload validation for true void commands.
Handle SendMessages with a dedicated response deserializer instead of weakening global void validation.