修复雷达引导2个相机引导录像重复问题；

‘liusuyi’

2023-10-25 bb22ca2e9b9c60b0138a322ad49cab7ea8aa06e1

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export function isPromise(maybePromise) {
    return (!!maybePromise &&
        !!maybePromise.then &&
        typeof maybePromise.then === 'function');
}