[BUG] Fix whatsapp_native build

[adityakalro]

Quick Summary

WhatsappNative build is failing

Environment & Tools

• **PicoClaw Version:0f700a6 (e.g., v0.1.2 or commit hash)
• **Go Version:go 1.26 (e.g., go 1.22)
• **Operating System:macOS (e.g., Ubuntu 22.04 / macOS / Android Termux)
• **Channels:WhatsApp Native (e.g., Discord, Telegram, Feishu, ...)

📸 Steps to Reproduce

1. make build-whatsapp-native

❌ Actual Behavior

Build failure with multiple imports missing

✅ Expected Behavior

Build success

💬 Additional Context

[SiYue-ZO]

It has been dealt with #1569