Fix benchmarks/run_tests (#12420)

Author: yumkam

ydb/library/benchmarks/runner/run_tests/run_tests.py

@@ -105,11 +105,12 @@ def __init__(self, args, enable_spilling):
         if self.args.clean_old or not self.queries_dir.exists():
             self.prepare_queries_dir([
                 f"dq.MaxTasksPerStage={self.args.tasks}",
-                "dq.OptLLVM=ON"
-            ] + [
+                "dq.OptLLVM=ON",
                 "dq.UseFinalizeByKey=true",
+            ] + ([
+                "dq.EnableSpillingInChannels=true",
                 "dq.EnableSpillingNodes=All",
-            ] if self.enable_spilling else [])
+            ] if self.enable_spilling else []))
         self.tpc_dir = pathlib.Path(f"{self.args.downloaders_dir}/tpc/{self.args.variant}/{self.args.datasize}")
         if not self.tpc_dir.exists():
             self.prepare_tpc_dir()