fix cinn fail to compile paddle.mean in some situation

[ZelinMa557]

PR Category

CINN

PR Types

Bug fixes

Description

fix test1 in issue https://github.com/PaddlePaddle/Paddle/issues/63370. With this fix, test2 no longer cause segment fault, but raise NotImplementedError: (Unimplemented) Not Implemented (at /home/aistudio/Paddle/paddle/cinn/ir/group_schedule/config/group_tile_config.cc:296)
There is a new test related to this: https://github.com/PaddlePaddle/Paddle/pull/63384

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