Fix linter error

[fheinecke]

Description

Simple style fix to appease the CI linter.

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refactoring

Changes

Please list the changes introduced in this PR:

• Fix linting issue

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[greptile-apps]

Greptile Summary

This PR performs a behavior-preserving refactor of an SM90 fused-attention eligibility condition to satisfy linting.

• Extracts the FP16 THD training configuration checks into is_sm90_f16_thd_training.
• Retains the existing fused-attention and deterministic-backward size guards.

Confidence Score: 5/5

The PR appears safe to merge because the refactor preserves the existing backend-selection behavior.

The extracted predicates operate on initialized, evaluation-safe values, while the size check and fused-attention fallback remain protected by the original use_fused_attention guard.

Important Files Changed

Filename	Overview
transformer_engine/pytorch/attention/dot_product_attention/utils.py	Extracts part of the backend-selection condition into a local boolean without changing the guarded behavior.

_{Reviews (1): Last reviewed commit: "Fix linter error" | Re-trigger Greptile}

[ptrendx]

/te-ci pytorch