as wasi-nn doesn't have these concepts, the best we can do without
risking breaking certain applications here is to pass through tensors
as they are.
this matches wasmtime's behavior.
tested with:
* wasmtime classification-example
(with this change, this example fails on tensor size mismatch
instead of implicitly resizing it.)
* license-plate-recognition-barrier-0007, a converted version
with non-fp32 output. [1]
(with this change, this model outputs integers as expected.)
[1] cd7ebe313b/models/public/license-plate-recognition-barrier-0007