Fix ProcessGroupGloo crash when setting unsupported backend options

[wanna-01]

Title

Fix ProcessGroupGloo crash when setting unsupported backend options

Summary

This MR fixes a runtime crash in ProcessGroupGloo._create_pg() caused by unconditional assignment to Gloo backend options that are not present in PyTorch's ProcessGroupGloo._Options.

Why this change is needed

Current code in ProcessGroupGloo._create_pg() does:

• backend_class.options.global_ranks_in_group = ...
• backend_class.options.group_name = ...

For Gloo, backend_class.options is torch._C._distributed_c10d._Options, which does not expose these attributes (it typically only has backend). Entering quorum on Gloo can therefore raise AttributeError and fail immediately.

NCCL path is not affected because NCCL Options does provide these fields.

Root cause

The code assumes Gloo options support the same attributes as NCCL options.

What this MR changes

In torchft/process_group.py (ProcessGroupGloo._create_pg):

• wrap assignment of global_ranks_in_group in try/except AttributeError
• wrap assignment of group_name in try/except AttributeError

So unsupported optional fields are skipped on Gloo instead of crashing.

Behavioral impact

• prevents Gloo quorum initialization from hard-failing with AttributeError
• no behavior change for NCCL path
• keeps compatibility across PyTorch versions where Gloo options surface differs

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