Enable sample nightly PT2 benchmark on B200 (#158011)
Summary:
Per the discussion with nWEIdia, this resumes the work on https://github.com/pytorch/pytorch/pull/157870 to enable PT2 benchmark on B200
### Testing
https://github.com/pytorch/pytorch/actions/runs/16615101382
X-link: https://github.com/pytorch/pytorch/pull/158011
Approved by: https://github.com/nWEIdia, https://github.com/atalman
Reviewed By: yangw-dev
Differential Revision: D79490413
fbshipit-source-id: 0202249d62bd3011a1e60925b2f8442ddfdcbff7
