PaganinProcessor doesn't work on data with one angle

[hrobarts]

Description

If I try to run the PaganinProcessor on a single radiograph I get an error ValueError: Unknown dimension angle. Should be one of (<AcquisitionDimension.VERTICAL: 'vertical'>, <AcquisitionDimension.HORIZONTAL: 'horizontal'>), or an integer in range 0 - 2

Environment

import cil, sys
print(cil.version.version, cil.version.commit_hash, sys.version, sys.platform)

24.1.1.dev105+g4f6e3cfb.d20240830 g4f6e3cfb 3.10.14 | packaged by conda-forge | (main, Mar 20 2024, 12:45:18) [GCC 12.3.0] linux