Fix Windows clang/no-exceptions portability (#33140)
## Summary
Fix two portability issues encountered by Windows clang builds that
disable C++ exceptions:
- Open MoE expert state files through the standard
`std::filesystem::path` stream constructor instead of relying on MSVC's
wide-string overload. Add an inference-session regression for ASCII and
UTF-8/Unicode filenames.
- Backport ONNX portability fixes into both the CMake and vcpkg patch
mirrors: const-reference error helpers, tensor dimension errors routed
through the no-exceptions-aware helper, and traits-based resource
sentinels that avoid a non-constant `INVALID_HANDLE_VALUE` template
argument.
The ONNX changes are selected backports of already merged fixes:
- https://github.com/onnx/onnx/pull/8126 (const-reference error helpers)
- https://github.com/onnx/onnx/pull/8220 (tensor error routing)
- https://github.com/onnx/onnx/pull/8279 (resource sentinel portability)
Keep the existing ONNX patches and the pinned ONNX 1.22.0 version
unchanged. No opset or public API changes.
## Validation
- Based on freshly fetched upstream main
`b5cb51748b5b9efb3de90b31670c91b6829c4dba`.
- Windows x64 CPU build of `onnxruntime_test_all`; all 30 selected
native-path and neighboring MoE/KernelPilot tests executed and passed.
- Full patch checked with both Git and GNU patch against a pristine ONNX
1.22.0 archive whose SHA1 matches the dependency pin; both mirrors are
byte-identical.
- All seven patched ONNX sources match the dependency sources used by
the successful CPU build.
- Windows clang-cl C++20 syntax checks with `-fno-exceptions` passed for
the patched tensor/resource headers, native-path stream constructor, and
`assertions.cc`. The probe rejects exception-enabled compilation.
- Scoped lintrunner, whitespace, and editor diagnostics passed.
Linux/macOS runtime tests and a full compiler-no-exceptions ORT build
were not run for this latest-main branch.
