[Bench] Run benchmarks' integration tests only on PR (#20650)

Author: lukaszstolarczuk

devops/actions/run-tests/benchmark/action.yml

@@ -261,13 +261,14 @@ runs:
         ${{ inputs.dry_run == 'true' && '--dry-run' || '' }} \
 
       echo "::endgroup::"
-      
-      # Run integration tests
-      # NOTE: Each integration test prints its own group name as part of test script
-      export LLVM_BENCHMARKS_UNIT_TESTING=1
-      export COMPUTE_BENCHMARKS_BUILD_PATH=$WORKDIR/compute-benchmarks-build
-      python3 ./devops/scripts/benchmarks/tests/test_integration.py
 
+      # Run benchmarks' integration tests
+      # NOTE: Each integration test prints its own group name as part of test script
+      if [ '${{ github.event_name == 'pull_request' }}' = 'true' ]; then
+        export LLVM_BENCHMARKS_UNIT_TESTING=1
+        export COMPUTE_BENCHMARKS_BUILD_PATH=$WORKDIR/compute-benchmarks-build
+        python3 ./devops/scripts/benchmarks/tests/test_integration.py
+      fi
   - name: Cache changes and upload github summary
     if: always()
     shell: bash