修改任务类

curl --location --request PUT 'http://test-cn.your-api-server.com/task-class/update?task_class_id=undefined' \
--header 'Authorization;' \
--header 'X-Idempotency-Key: test001' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data '{
    "name": "数据结构复习",
    "start_date": "2025-12-10",
    "end_date": "2026-01-05",
    "mode": "auto",
    "config": {
        "total_slots": 16,
        "allow_filler_course": true,
        "strategy": "steady",
        "excluded_slots": [
            1,
            6
        ]
    },
    "items": [
        {
            "order": 1,
            "content": "绪论、线性表",
            "embedded_time": {
                "date": "2025-12-22",
                "section_from": 1,
                "section_to": 2
            }
        },
        {
            "order": 2,
            "content": "栈、队列、串与数组",
            "embedded_time": null
        }
    ]
}'