Fix P/D with DP Supervisor (#46628)

Signed-off-by: Robert Shaw <114415538+robertgshaw2-redhat@users.noreply.github.com>

vllm/v1/engine/core.py

@@ -1175,10 +1175,10 @@ class EngineCoreProc(EngineCore):
                 numa_utils.log_current_affinity_state(process_title)
 
             if data_parallel and vllm_config.kv_transfer_config is not None:
-                # modify the engine_id and append the local_dp_rank to it to ensure
+                # modify the engine_id and append the dp_rank to it to ensure
                 # that the kv_transfer_config is unique for each DP rank.
                 vllm_config.kv_transfer_config.engine_id = (
-                    f"{vllm_config.kv_transfer_config.engine_id}_dp{local_dp_rank}"
+                    f"{vllm_config.kv_transfer_config.engine_id}_dp{dp_rank}"
                 )
                 logger.debug(
                     "Setting kv_transfer_config.engine_id to %s",