[Auto] Pass supported kwargs to fixed_cross_entropy (cluster-43240-3): merged 1 of 2 PRs

[evalstate]

Cluster: cluster-43240-3
Base: origin/main

Merged:

• Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254: Member PR with smaller focused fix; merged cleanly and adds weight and label_smoothing passthrough to fixed_cross_entropy.

Skipped:

• Fix(43240): pass kwargs to nn.functional.cross_entropy huggingface/transformers#43251: Duplicate overlapping fix; conflicted with already-merged PR 43254 in the same function, with no additional substantive change needed.

Failed:

• None

Notes:

• Issue 43240 is closed by github-actions[bot], but the fix was still absent from current main.
• Repository was left clean on branch merge-cluster-cluster-43240-3-20260424123400.
• ruff check src/transformers/loss/loss_utils.py passed.
• Python smoke test could not run because torch is not installed in the environment.

Next steps:

• Run targeted tests in an environment with torch installed.
• Consider adding/confirming coverage for fixed_cross_entropy weight and label_smoothing passthrough before upstream merge.

[evalstate]

Trace for this mergeability run: https://huggingface.co/datasets/evalstate/transformers-merge-experiments/blob/main/2604241356-AimY2j__dev__codex.jsonl