onnxruntime

[CoreML] Adapt to `MLMultiArray.dataPointer` deprecation (#17726)

### Description
This PR addresses https://github.com/microsoft/onnxruntime/issues/17652.
The deprecated `MLMultiArray.dataPointer` is replaced with
`.getBytesWithHandler`, as suggested by the docs.
For now, I am only checking that the output `MLMultiArray` is
contiguous, returning unsupported operation when that is not the case.
I think this is already better than what we have right now, so we can
block unsafe calls to `.dataPointer` (if any..).

I would be happy to implement the handling of the non-contiguous case
(replacing `memcpy` for such cases) as suggested by @edgchen1, but I am
not sure how to reproduce that case to add a corresponding unit-test.
Would we have to define a custom `MLCustomLayer` to get a non-contiguous
output from a model..?

### Motivation and Context
Fix https://github.com/microsoft/onnxruntime/issues/17652.

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Co-authored-by: nicolo-lucchesi <nicolo.lucchesi@hexagon.com>
Co-authored-by: Edward Chen <18449977+edgchen1@users.noreply.github.com>