wx.onBackgroundAudioPlay(function listener)
从基础库 1.2.0 开始，本接口停止维护，请使用 wx.getBackgroundAudioManager 代替
小程序插件：不支持
微信 鸿蒙 OS 版：支持
功能描述
监听音乐播放事件。
参数
function listener
音乐播放事件的监听函数
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