Incorrect size of itk::MaximumProjectionImageFilter output

### Description

There seems to be an inconsistent behaviour in how `itk::MaximumProjectionImageFilter` creates its output:
if I pass a 3D image (XYZ axes) and ask for a maximum projection along X, I expect to get a 2D image with YZ axis order. However, the filter produces it in ZY order.
When the direction of projection is set to Y or Z, the filter outputs the image in the correct order: XZ and XY respectively.

### Steps to Reproduce

Run MWE: https://gist.github.com/aystroganov/e82783d6f23b84640245fd7b35b8bfb8

### Expected behavior

The scripts prints `[20, 30]`

### Actual behavior

The scripts prints `[30, 20]`

### Reproducibility

100%

### Versions

ITK 5.0.1

### Environment

Windows 10, VS 2017

### Additional Information