[Distributed] fix recreate nccl comm bug #73625
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PR Category
Distributed Strategy
PR Types
Bug fixes
Description
Pcard-90602
在开pp的场景下recreate nccl comm存在hang的问题， 原因是同一个通信组内 tcp通信时unique_key的获取是无序的，导致相互等待。当前通过有序map代替无序map来修复这个问题。