Spec changed for reduction ops when noop_with_empty_axes is True #26288
Description
The ONNX spec has fixed the issue about incorrect behavior for ReduceSumSquare and other reduction ops when noop_with_empty_axes is true in this PR.
e.g. for ReduceSumSquare, when axes input is not provided or is empty and noop_with_empty_axes is True, square should be always applied on individual elements. But current implementation just returns the input.