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问题/功能描述

为自适应平均池化3D算子新增对大尺寸池化核（体积DHW >= 128）的支持。原实现在处理大核时可能存在内存访问和计算效率瓶颈，本次修改旨在通过引入分片（Tiling）机制来优化此类场景下的算子性能。

修改方案描述

新增了 AdaptiveAvgPool3dBigKernelTiling 类，继承自基础分片类，专门用于大核场景。核心实现包括：1）通过阈值判断自动启用大核分片模板；2）根据硬件核心数、UB大小等关键因素动态计算分块因子和最大处理元素数；3）精确计算每个输出维度对应的池化核大小；4）将分片参数封装到特定数据结构供内核使用。同时，在基础类中暂时注释了部分索引类型校验代码（标记为TODO），需关注后续处理。

Review Guide

This pull-request passes review.
Committers who wrote a comment of /approve are: tangweiwei2, chenqi317.
Reviewers who wrote a comment of /lgtm are: tangweiwei2, chenqi317.