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### What this PR does / why we need it? Fix mooncake connector. In scenarios where TP is not equal, when the prefill TP size is less than the number of key-value heads, _get_remote_tp_ranks_for_req will return a list of np.arrays. Performing an operation like int in list of np.arrays will cause an error. Converting the list of np.arrays into a single np.array resolves this issue. ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? qwen235B P tp16, D tp1 P tp8, D tp1 P tp4, D tp1 P tp8, D tp2 - vLLM version: v0.11.0rc3 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0 --------- Signed-off-by: liziyu <liziyu16@huawei.com>