Revert "Change default benchmark mode to upstream PyTorch (#2298)" (#2342)

Address
#2298 (comment).

This reverts commit 782aecf.

CI status:
https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/11034669496

Author: anmyachev

.github/workflows/triton-benchmarks.yml

@@ -14,15 +14,15 @@ on:
       install_ipex:
         description: Install Intel PyTorch Extension
         type: boolean
-        default: false
+        default: true
   schedule:
     - cron: "5 23 * * *"
 
 permissions: read-all
 
 env:
   PYTHON_VERSION: "3.10"
-  USE_IPEX: ${{ github.event_name == 'schedule' && '0' || inputs.install_ipex && '1' || '0' }}
+  USE_IPEX: ${{ github.event_name == 'schedule' && '1' || inputs.install_ipex && '1' || '0' }}
 
 jobs:
   build: