Function group_lock_remove

Scripts/ButSystem.py:14778–14784

(gid: int)

            body_txt = "[decrypt failed]"

        m = {
            "id": r["id"],
            "sender": r["sender"],
            "kind": "voice" if has_voice else "text",
            "body": body_txt if not has_voice else "",
            "created_at_local": _local_time_str(r["created_at"]),
            "created_at_utc": r["created_at"],
            "voice_id": v["id"] if v else None,
            "voice_mime": v["mime"] if v else "audio/webm",
        }