PyJobTransforms: Add BS file to the logic that fills in Input.FileNentries

This is a minor follow-up to !57299 (merged). We extend the logic to support jobs that use bytestream as input, e.g., RAWtoALL. Thanks a lot to @gemmeren for the heads-up.

Let me also tag @tadej since we discussed in the previous MR (and agreed) that the hardcoded filetypes are not the best approach. I'm not 100% sure if there is a more flexible way to go about it these days. One shortcoming is that if we start running D2AOD jobs more regularly, then we would need to start adding the DAOD input filetypes, which obviously is format dependent. Then, things get more complicated but maybe one really needs to worry about DAOD_PHYS from a practical point of view. I wonder if we should also add that now.