Fodder cannot have SAF and the same augment together

[124san]

Describe the bug
In the affix simulator, when I make an affix an augment factor of a fodder, I cannot add the same augment as regular affix.

To Reproduce
Steps to reproduce the behavior:

1. Add any affix to any fodder. (For example, I added 'Junk B')
2. Rightclick 'Junk B' and set it as factor
3. Drag and drop 'Junk B' to the same unit
4. 'Junk B' cannot be placed on the unit

Expected behavior
The SAF and regular affix should coexist on the same fodder

Screenshots

After I released left click 'Junk B' cannot be added.
Additional context
In game, it is possible to have an equipment with SAF and the same affix on the same equipment, so I believe this is a bug.