Refactor MASK_CAUSAL parameter to use IS_CAUSAL

[LoserCheems]

Summary

• This change refactors the MASK_CAUSAL parameter to utilize IS_CAUSAL in kernel configurations for both dense and sparse operations.

Root Cause

• The previous implementation used a hardcoded value for MASK_CAUSAL, which did not leverage the IS_CAUSAL parameter, leading to potential inconsistencies.

Changes

• Updated the MASK_CAUSAL parameter in multiple kernel functions to reference IS_CAUSAL instead of a static true value.

Reproduction

• No specific bug to reproduce; this is a refactor for improved parameter handling.

Tests

• Existing tests validate the functionality of the kernels; no new tests were added as this is a refactor.

Compatibility

• No backward compatibility issues; the change maintains the existing interface.

Checklist

• Linked issue provided
• Adds or updates tests
• Updates docs if needed
• No perf regressions