Modify OpenClaw's Telegram pairing logic so unapproved users receive pairing codes on every /start message before approval. Use when users need to repeatedly access pairing codes after the initial request, ensuring consistent access to pairing instructions even if the initial code was missed or lost.

修改 OpenClaw 的 Telegram 配对逻辑，使未经批准的用户在每次发送 /start 命令时都收到配对码，确保用户在首次请求后仍能反复获取配对码，即使最初收到的配对码被遗漏或丢失，也能持续获得配对指引