[pytorch/pytorch] DISABLED test_no_fusion_indexing_var_usage (__main__.TestUserKernelEpilogueFusion)

### ROOT CAUSE The test `test_no_fusion_indexing_var_usage` is failing because the fusion is incorrectly being applied to operations involving variable indexing, which should not be fused. The root cause is the absence of a proper condition to skip fusion when variable indexing is detected in the kernel. ### CODE FIX ```python # In the fusion condition check, add a check for variable indexing if not has_variable_indexing(kernel): fuse_operations() ``` This ensures fusion is skipped when variable indexing is present.