Replace the include of verified_hlo_module.h from tensorflow/compiler/xla/tests/ to tensorflow/compiler/xla/hlo/testlib/, in memory_bound_loop_optimizer_test.cc.

Replace the include of verified_hlo_module.h from tensorflow/compiler/xla/tests/ to tensorflow/compiler/xla/hlo/testlib/, in memory_bound_loop_optimizer_test.cc. #56780