test(utils): add checkpoint API coverage tests on NPU-pytorch-AtomGit

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已合并

test(utils): add checkpoint API coverage tests on NPU #37236

Jinfan Liu创建于 5月30日从JfanLiu/pytorch_9163： test-utils-checkpoint-weak-npu-2.7.1 合入到 Ascend/pytorch： v2.7.1

test(utils): add checkpoint API coverage tests on NPU #37236

已合并

Jinfan Liu创建于 5月30日

从JfanLiu/pytorch_9163 test-utils-checkpoint-weak-npu-2.7.1合入到Ascend/pytorch v2.7.1