[release/2.13] test_get_device_properties_tensor_device missing XPU attribute

## Bug Description

`test_get_device_properties_tensor_device` fails because `torch._C._XpuDeviceProperties` does not have `max_threads_per_multi_processor` attribute. The test was ported from CUDA where `CudaDeviceProperties` has this attribute.

## Affected Tests

Cases:
op_ut,third_party.torch-xpu-ops.test.xpu.dynamo.test_functions_xpu.FunctionTests,test_get_device_properties_tensor_device

## Error Message

```
AttributeError: 'torch._C._XpuDeviceProperties' object has no attribute 'max_threads_per_multi_processor'
```

## Context

Surfaced by PR #3383 (CI run 25534217826) which ported `test_functions_xpu.py`.