变更摘要

该 PR 属于质量加固类改动，针对编译图构建与图管理流程中的若干代码规范问题（"规则一"）进行修复。核心改动是为 GraphBuilder 和 GraphManager 中不修改成员状态的成员函数统一补充 const 限定符，同步更新对应的声明与定义，以增强接口的语义约束、提升代码可读性，不改动任何业务逻辑与行为。

主要改动

• GraphBuilder::IsDataDirectConnNetoutput 增加 const: 在 compiler/graph/build/graph_builder.cc 定义及 graph_builder.h 声明中，将该静态成员函数补充 const 限定符，声明其不修改对象状态。
• GraphManager::IsCheckpointGraph 与 IsAssignOpData 增加 const: 在 compiler/graph/manager/graph_manager.cc 定义及 graph_manager.h 声明中，为检查 checkpoint 图与 Assign 算子数据的两个成员函数补充 const 限定符。
• GraphManager::IsGraphNeedRebuild 增加 const: 在 graph_manager.cc 定义及 graph_manager.h 声明中，为判断图是否需要重建的成员函数补充 const 限定符。
• GraphManager::RefreshOptionByGraph 增加 const: 在 graph_manager.cc 定义及 graph_manager.h 声明中，为按图刷新引擎选项的成员函数补充 const 限定符。

Hi @wys222111, welcome to submitting your first PR to ge!

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代码审查

✅ 未发现问题

/lgtm

/approve