onnx — backend node test coverage (4 runtimes)

Pass / fail status of every ONNX backend node test bundled with the onnx package (collected via onnx.backend.test.loader.load_model_tests(kind="node")) when executed against four runtimes: onnxruntime, the Python reference implementation shipped with onnx (onnx.reference.ReferenceEvaluator), the onnx-light reference evaluator backed by its C++ kernel dispatch table (onnx_light.reference.ReferenceEvaluator) and the extended reference evaluator from yobx (yobx.reference.ExtendedReferenceEvaluator). Use the filter below to narrow the table to tests matching a regular expression — the pass ratio is recomputed for the selection.