[execution trace/chakra] remove backend_id from pg_info (#120038)
Summary:
PR 104373(https://github.com/pytorch/pytorch/pull/104373) log backend which has an unsafe dict loop up that might fail.
We decide to deprecate backend_id and use pg id/name directly.
Differential Revision: D53676181
Pull Request resolved: https://github.com/pytorch/pytorch/pull/120038
Approved by: https://github.com/aaronenyeshi
