Pull Request

变更摘要

该 PR 旨在修复因新 CANN 包新增 DT_HIFLOAT4_SCALE 数据类型导致 DT_MAX 从 43 变为 44 后、硬编码 DT_MAX 边界值的测试用例断言失败的问题。本次共删除 2 个测试文件中 4 个硬编码 DT_MAX=43 边界值的用例（共删除 36 行、无新增），后续将改为动态获取 DT_MAX 值。

主要改动

• 删除 C++ 端非法 dtype 边界用例：在 tests/graph_metadef/ut/graph/testcase/inference_rule_unittest.cc 中删除 InferenceRuleUtest 下的 InvalidDtype1、InvalidDtype2、InvalidDtype3 三个用例，它们均在断言错误信息中硬编码了 [0,43(DT_MAX)) 的范围描述。
• 删除 Python 端 DT_MAX 边界用例：在 tests/ge/ut/ge/graph/pyge_tests/python_custom_op_proto_test.py 中删除 test_tensor_desc_rejects_data_type_boundary，该用例直接以 DataType.DT_MAX 作为入参并断言 "less than DataType.DT_MAX" 错误信息，无法适配 DT_MAX 的动态变化。
• 统一移除对固定 DT_MAX 数值的依赖：两处改动均为纯删除（无新增代码），消除测试对 DT_MAX=43 这一具体取值的耦合，使测试在新镜像（DT_MAX=44）下不再因边界值变化而失败。

代码审查

✅ 未发现问题

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