replace the Old Terms

### Is your feature request related to a problem? Please describe

https://www.intel.com/content/www/us/en/docs/oneapi/optimization-guide-gpu/2024-2/intel-xe-gpu-architecture.html

As the intel spec shows, the EU is `old term`. It is time to describe the documents and API using the `new term`.

For example,
https://github.com/intel/llvm/blob/sycl/sycl/doc/extensions/supported/sycl_ext_intel_device_info.md
In above spec, `gpu_eu_simd_width` is everywhere. But for Xe and Xe2, everyone starts talking or coding using XeCore/XVE/XMX. EU is an old term, which will make the developers to confused.

### Describe the solution you would like

_No response_

### Describe alternatives you have considered

_No response_

### Additional context

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