TensorSpan System.Array constructor

[michaelgsharp]

Based on the discussion in #107266, we need to decide if we want TensorSpan/ReadOnlyTensorSpan to have a System.Array constructor or if we want it to be some type of Create method instead due to the potential pitfalls of inherent array typing.

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[jeffhandley]

@tannergooding I'm moving this to .NET 11, but if it's already been addressed by chance, please pull back into .NET 10 and close it.