Adds test coverage for multi-node routing in the hybrid executor, specifically covering routing behavior across nodes (FN-4775 Step 3). Fusion-Task-Id: FN-4775 Fusion-Task-Lineage: d75a91c9-0c6c-421c-8bc9-11586590d6fe
Adds test coverage for multi-node routing in the hybrid executor, specifically covering routing behavior across nodes (FN-4775 Step 3). Fusion-Task-Id: FN-4775 Fusion-Task-Lineage: d75a91c9-0c6c-421c-8bc9-11586590d6fe