onnxruntime

45c06632 - Fix mlasi_sve.h preprocessor guards to allow clang compilation (#28507)

Fix mlasi_sve.h preprocessor guards to allow clang compilation (#28507) ### Description The outer `#ifndef __clang__` in `mlasi_sve.h` (line 20 to line 679) was intended to wrap the GCC-specific `#pragma GCC` directives, but it also ends up hiding every SVE kernel declaration and the typedefs from clang. The `#ifdef __clang__` block that defines `MLAS_SVE_TARGET` for clang's per-function `__attribute__((target("...")))` syntax is unreachable for the same reason. This moves the closing `#endif` up to right after the GCC pragmas so only the pragmas are GCC-only, and the rest of the header (typedefs, kernel declarations, MLAS_SVE_TARGET) is visible to both compilers. ### Motivation and Context Without this, building MLAS with clang for aarch64 fails at platform.cpp - the `MLAS_USE_SVE` runtime-dispatch block references `MlasSveErfKernel`, `MlasSveLogisticKernel`, and friends, all undeclared from clang's perspective. Confirmed working with clang 20.1.8.