Allow to return `ONNXProgram` when calling `to_onnx(dynamo=True)` (#20811)

* feat: return `ONNXProgram` when exporting with dynamo=True.
* test: add to_onnx(dynamo=True) unittests.
* fix: add ignore filter in pyproject.toml
* fix: change the return type annotation of `to_onnx`.
* test: add parametrized `dynamo` to test `test_if_inference_output_is_valid`.
* test: add difference check in `test_model_return_type`.
* fix: fix unittest.
* test: add test `test_model_onnx_export_missing_onnxscript`.
* feat: enable ONNXProgram export on torch 2.5.0
* extensions


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Co-authored-by: Jirka B <[email protected]>
Co-authored-by: Jirka Borovec <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>