fix(agentic-mtp): restore GPU_MAX_HW_QUEUES=5 for ROCm overlap

Re-add GPU_MAX_HW_QUEUES=5 under DPA to enable compute/memory op
overlap on ROCm, matching the old run configuration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: seungrokj

benchmarks/single_node/agentic/dsv4_fp4_mi355x_sglang_mtp.sh

@@ -93,6 +93,8 @@ if [ "$DP_ATTENTION" = "true" ]; then
     export SGLANG_DP_SHARED_EXPERT_LOCAL=1
     export SGLANG_DP_USE_GATHERV=1
     export SGLANG_DP_USE_REDUCE_SCATTER=1
+    # 0719
+    export GPU_MAX_HW_QUEUES=5
 
     # SGLang divides the configured chunk across DP schedulers. Use a 16K
     # per-scheduler chunk so long agentic prefill tails drain within the