修改：群聊单聊会话以监听事件方式进行websocket转发

liusuyi

2024-07-26 92a1a1e5b8fa53e908d1e0a398acc524b8798d0e

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