deepseek-ai / deepseek-ai/DeepEP

[Proposal] Adding HybridEP compatibility with newer NVSHMEM versions

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Description

On the main branch v1.x, there was runtime timeout when NVSHMEM modified the way default qpairs were stored by introducing a QP-specific APIs (starting ~3.5.19). It was discussed in issue #553 , and subsequently PR #564 was merged to allow DeepEP to work with the newer NVSHMEM versions. Can those patches (since moved to legacy in the main branch) also be applied to `hybrid-ep`? I have a case to use hybrid ep with a newer NVSHMEM version.

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