[GHF] Improve failures debugability
Print exception backtrace in the run log
Print GraphQL arguments as well as query itself when it fails
Print more concise message when PR is not reviewed
Make error reports like https://github.com/pytorch/pytorch/pull/75851#issuecomment-1102868693 much easier to debug
Pull Request resolved: https://github.com/pytorch/pytorch/pull/76121
Approved by: https://github.com/janeyx99
