[CI][Bench] Refactor bench workflow
dispatch run: https://github.com/intel/llvm/actions/runs/19759131571/job/56617416122#step:19:1007 and results saved into dashboard: https://intel.github.io/llvm/benchmarks/?runs=test_refactor_BMG_L0v2
@sarnex , can you please re-review?
Sorry I don't know how I missed so many pings
I started another dispatch to be sure I didn't break anything: https://github.com/intel/llvm/actions/runs/20140113209
@intel/llvm-gatekeepers, changes are only in benchmarks' workflow - issues in tests are not related. Please merge
Failing e2e tests are unrelated, this patch contains only workflow changes. I'll merge it.