Fix breaking changes of paddle.sum #909
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PR types
Breaking changes
PR changes
APIs
Description
因 develop 升级，使
paddle.sum对齐 numpy 和 pytorch 行为，在输入类型是[bool, int32, int64]且未指明dtype的时候，输出的类型会被默认设置成int64，是一个不兼容升级，导致 FasterTransformer 这边调用报错。之前的行为是，如果没有指明
dtype，输出的类型将与输入的类型一致。相关 PR：PaddlePaddle #34313