[DeepSeek] DeepSeek adapt to newer vLLM main

[MengqingCao]

What this PR does / why we need it?

DeepSeek adapt to newer vLLM main e5192819208c4d68194844b7dfafbc00020d0dea

Does this PR introduce any user-facing change?

How was this patch tested?

• vLLM version: v0.11.0rc3
• vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

[github-actions]

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[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[MengqingCao]

closing as done in #3612