[PyTorch] Disable THD test on architectures lower than sm90

[cyanguwa]

Description

This PR disables CP tests for THD format for architectures lower than sm90. In the future, we will add a utility function so users can check this before running any tests.

Type of change

• [ ] Documentation change (change only to the documentation, either a fix or a new content)
• [x ] 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 refractor

Changes

Please list the changes introduced in this PR:

• Skipped tests for fused attention with THD and CP on <sm90.

Checklist:

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

[cyanguwa]

/te-ci pytorch

[timmoon10]

Closed in favor of https://github.com/NVIDIA/TransformerEngine/pull/973.