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Describe the current behavior / 问题描述 (Mandatory / 必填)

y 补 l0op::Contiguous(y) → yFinal，算子改传 yFinal，消除 kernel 硬编码连续偏移导致的非连续 y 写错位

• 算子调用后按指针保护拷回：if (convStatesFinal != convStatesRef) / if (yFinal != y) 时 l0op::
  ViewCopy 把更新写回用户原始 tensor，修复非连续 convStatesRef 的 in-place 静默丢失

op_api/aclnn_causal_conv1d_fn.cpp：prefill 路径同款缺陷，同步修复

UT 新增 3 个非连续用例：update_convStates_y_non_contiguous、update_2d_varlen_non_contiguous、
fn_convStates_y_non_contiguous，验证结果 59/59 全过

Environment Information / 环境信息 (Mandatory / 必填)

ascend950

Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)

NA

Describe the expected behavior / 预期结果 (Mandatory / 必填)

NA

Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

NA

Special notes for this issue/备注 (Optional / 选填)