fix: support HMA for vLLM OffloadingConnector#351
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Fixes #267.
Summary
This PR backports vLLM 0.21.0's HMA support for
OffloadingConnectorto older vLLM versions.In vLLM 0.16.0 through 0.20.x,
OffloadingConnectorexists but does not inheritSupportsHMA. Since vLLM 0.16 enables the hybrid memory allocator path by default,vllm serve ... --kv-offloading-size Nfails during connector creation with: