itk. array_from_vector_container fails for empty numpy array

### Description

### Steps to Reproduce

```
import numpy as np
import itk
a1 = np.array([], dtype='uint64')
p1 = itk.vector_container_from_array(a1)
q1 = itk.array_from_vector_container(p1)
```

The above code fails with the following message:
```
Wrapping/Generators/Python/itk/itkPyVectorContainerPython.py", line 2580, in array_view_from_vector_container
memview = itkPyVectorContainerULUL._array_view_from_vector_container(vector_container)
ValueError: PyMemoryView_FromBuffer(): info->buf must not be NULL
```

And Following code works:
```
a1 = np.array([5], dtype='uint64')
p1 = itk.vector_container_from_array(a1)
q1 = itk.array_from_vector_container(p1)
print(q1.shape)
```

### Expected behavior
Output should be empty numpy array.

### Actual behavior

```
Wrapping/Generators/Python/itk/itkPyVectorContainerPython.py", line 2580, in array_view_from_vector_container
memview = itkPyVectorContainerULUL._array_view_from_vector_container(vector_container)
ValueError: PyMemoryView_FromBuffer(): info->buf must not be NULL
```

### Reproducibility

100%

### Versions

Linux ITK 5.3rc03

### Environment

Linux Ubuntu 20.04.2 LTS

### Additional Information