BackgroundAudioManager 设置referrerPolicy='origin',开发工具和android系统上，防盗链音频可以播放成功，iOS上播放不成功，onError回调里报错如下：

{errMsg: "playerErrCode:6, systemErrCode:403, domain:com.tencent.KSAudioPlayer.HTTP, description:未能完成操作。（com.tencent.KSAudioPlayer.HTTP错误403。）", errCode: 10002, src: "https://private-examine.oss-cn-shanghai.aliyuncs.com/digitcure/Sds/HJYY03.mp3"}