vllm

bc50e5fc - Address review: use registered envs.VLLM_DISABLE_PUSH_ALLREDUCE

Address review: use registered envs.VLLM_DISABLE_PUSH_ALLREDUCE Replace direct os.environ.get(_DISABLE_ENV_VAR) == "1" check with envs.VLLM_DISABLE_PUSH_ALLREDUCE to use the centrally registered env var from envs.py, which provides validation and caching. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: Alexander Matveev <alexm-redhat@dgx-b200-02.mgmt.accl-001.lab.rdu2.dc.redhat.com>