Saving image after loading as_closest_canonical swaps axis

I have noticed that in some cases (not always) saving an image after being loaded using `nib.as_closest_canonical` and then re-loading it in the same way causes axis to be transposed. To illustrate this the attached image and the code below can be used. ```python import nibabel as nib from pathlib import Path f = Path("test.nii.gz") image = nib.as_closest_canonical(nib.load(f)) nib.save(nib.Nifti1Image(image.get_fdata(), image.affine, image.header), "test-canonical.nii.gz") image_reloaded = nib.as_closest_canonical(nib.load("test-canonical.nii.gz")) print(image.shape, image_reloaded.shape) # (1024, 1024, 33) (33, 1024, 1024) ``` Expected behavior: The axis order should be consistent after saving an image and re-loading it. Exemplary image: [test.nii.gz](https://github.com/user-attachments/files/24040999/test.nii.gz)