onnxruntime

549cbc7e - Fix issue with schema lookup where there are custom ops using the ONNX domain (#14492)

Fix issue with schema lookup where there are custom ops using the ONNX domain (#14492) ### Description <!-- Describe your changes. --> Fix issue with schema lookup where there are custom ops using the ONNX domain. Update testing infrastructure to use an explicit domain for custom ops. Using an empty string clashes with the ONNX domain and can cause unexpected issues. It's also a bad example for external users as our docs point to the unit tests. Fix a couple of places using exact matching of the node since version to be slightly more flexible and use a range (which aligns with how the kernel lookup works). ### Motivation and Context <!-- - Why is this change required? What problem does it solve? - If it fixes an open issue, please link to the issue here. --> Fixes a problem that came up when adding support for standalone custom ops in an ORT format model. Separating these changes out to simplify review.