swap inherit order

Author: Gasoonjia

backends/apple/metal/metal_backend.py

@@ -16,7 +16,7 @@
 @experimental(
     "This API and all of Metal backend related functionality are experimental."
 )
-class MetalBackend(BackendDetails, AotiBackend):
+class MetalBackend(AotiBackend, BackendDetails):
     """
     MetalBackend is a backend that compiles a model to run on Metal/MPS devices. It uses the AOTInductor compiler to generate
     optimized Metal kernels for the model's operators with libtorch-free. The compiled model can be executed on Metal devices

backends/cuda/cuda_backend.py

@@ -9,16 +9,16 @@
 
 import torch
 from executorch.backends.aoti.aoti_backend import AotiBackend
-from executorch.exir.backend.backend_details import BackendDetails
 from executorch.exir._warnings import experimental
+from executorch.exir.backend.backend_details import BackendDetails
 from torch._inductor.decomposition import conv1d_to_conv2d
 
 
 @final
 @experimental(
     "This API and all of cuda backend related functionality are experimental."
 )
-class CudaBackend(BackendDetails, AotiBackend):
+class CudaBackend(AotiBackend, BackendDetails):
     """
     CudaBackend is a backend that compiles a model to run on CUDA devices. It uses the AOTInductor compiler to generate
     optimized CUDA kernels for the model's operators with libtorch-free. The compiled model can be executed on CUDA devices