fix cinn_instruction_run_op_test when FLAGS_use_system_allocator=True #47731
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PR types
Bug fixes
PR changes
OPs
Describe
FLAGS_use_system_allocator打开时，cinn_instruction_op_test会随机挂，经过debug发现原因是单测中同个cinn_instruction_op对象在cpu和gpu中重复使用，前后两次执行时中有些数据被cache，导致cpu的kernel被用在gpu中执行