Describe the bug
RandKSpaceSpikeNoise does not work with NumPy array if intensity_range is not set manually.

In case a NumPy array is provided, the linked part will call np.mean(.., dim=...) but NumPy does not support dim arguments (should be axis). The implementation works fine for torch.Tensors.

To Reproduce
Call transform on NumPy array with default values (specifically intensity_range =None).

Expected behavior
No crash.

Screenshots
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Environment

Ensuring you use the relevant python executable, please paste the output of:

python -c 'import monai; monai.config.print_debug_info()'

Additional context
Add any other context about the problem here.