Updating FusedSiLU activation test to conform with updated nvFuser kernel generation

[akshaysubr]

Modulus Pull Request

Description

With the latest nvFuser update, one additional kernel is generated in the SiLU triple backward pass implementation. This is still much fewer than the ~35 kernels that torch generates by default, so is not a big concern. Updating the test to conform with this latest nvFuser version.

Checklist

• [x] I am familiar with the Contributing Guidelines.
• [x] New or existing tests cover these changes.
• [x] The documentation is up to date with these changes.
• [x] The CHANGELOG.md is up to date with these changes.
• [ ] An issue is linked to this pull request.

Dependencies

None

[akshaysubr]

/blossom-ci