[PyTorch] Check and set sliding window size based on attention mask type

[cyanguwa]

Description

This PR improves the function check_set_window_size in PyTorch so that window_size is always appropriately set based on the mask type.

no_mask, padding      : window_size = (-1, -1) or (>=0, >=0)
causal, padding_causal: window_size = (-1,  0)
arbitrary             : window_size = (-1, -1)

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)
• [ x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Changes

Please list the changes introduced in this PR:

• Added checks for different combinations of window_size and attn_mask_type to ensure they are consistent.

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

[cyanguwa]

/te-ci pytorch

[cyanguwa]

/te-ci pytorch

[cyanguwa]

/te-ci pytorch