优化:通道同步任务 增加：根据用户统计未读总数

liusuyi

2024-07-23 811b14aa5cd2bd6d4313b43dc38ce87cd938f3b0

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// TODO: Remove from `core-js@4`
var defineWellKnownSymbol = require('../internals/well-known-symbol-define');
 
// `Symbol.metadata` well-known symbol
// https://github.com/tc39/proposal-decorators
defineWellKnownSymbol('metadata');