Added allowed_workflows to pytorch probot (#98082)
Added allowed_workflows to pytorch probot. This is a follow up PR [regarding the retry bot](https://github.com/pytorch/test-infra/pull/3942/files#diff-ee5e4f1e1fa962c6f62e5dcebde6e0bab573e74474601bf5749ccb668fd9c900R14-R16).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98082
Approved by: https://github.com/huydhn
