Initial plan for fixing constant folding with If node initializers

Co-authored-by: justinchuby <11205048+justinchuby@users.noreply.github.com>

Author: Copilot

=0.1.16

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+Installing collected packages: mpmath, sympy, protobuf, numpy, ml_dtypes, onnx, onnx_ir
+Successfully installed ml_dtypes-0.5.4 mpmath-1.3.0 numpy-2.4.2 onnx-1.20.1 onnx_ir-0.2.0 protobuf-6.33.5 sympy-1.14.0