Add Int4 and UInt4 support for Cast (#24973)
Add Int4 and UInt4 support for `Cast`.
There were a few QNN pipelines
[failing](https://aiinfra.visualstudio.com/PublicPackages/_build/results?buildId=841810&view=logs&j=9d976e38-31ec-50dd-b1f8-279fbf889fca&t=85ed5ad3-b72a-52c3-abe0-a87b66004fd0&l=1773)
for this PR, which are fixed by this onnx PR [Update input and output
tensors in pb files to match the
model](https://github.com/onnx/onnx/pull/7074). The problem is that
onnxruntime, which uses onnx as a submodule in `cmake/external/onnx`,
points to the latest release of onnx (1.18.0), but in order to have the
pipeline run with my onnx fix, we would need to point to a newer
version.
Since we can't update the onnx submodule to point to a non-release
commit, waiting for a new onnx release might take a long time, and
creating a patch under
[onnxruntime/cmake/patches/onnx](https://github.com/microsoft/onnxruntime/tree/main/cmake/patches/onnx)
with the changes in my onnx PR is tricky because that fix changes some
binary files, this PR skips the tests which are currently failing in the
QNN pipelines.
