应用: 抖音
任务: 打开抖音，进入商城，搜索“iPhone16”，找到apple产品抖音自营旗舰店的iphone16，加入购物车
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: TYPE
type_text: iPhone16