Peishen Yan

[WebNN EP] Support Trilu op

2

Adds support for Trilu via WebNN Triangular op

[Feature Request] Move graph compilation behind higher transformers (graph optimization)

11

### Describe the feature request Hi developers, During my exploration for supporting L2 graph optimization for WebNN EP, the logic in ORT confuses me. In [`inference_session.cc` line 1233-1243](https://github.com/microsoft/onnxruntime/blob/c5087b9b58f929c37f5798c266a8b622b09bed82/onnxruntime/core/session/inference_session.cc#L1233C2-L1243C4), I find...

[WebNN EP] Support Einsum op

30

Adds support for einsum via WebNN matmul, transpose, reshape, reducesum, identity and element-wise binary ops.