Processing job API should not check the number of input files
In all current processing job APIs, I introduced a step to check the number and size of input files, to make sure they are correctly downloaded on the worker and are a priori good.
However, this prevent transformations to process 100% of the files, as when the TS is flushed, the final job will be attributed a smaller than usual number of files, i.e. only the ones that are left to processed.
See e.g. Step 3 of the workflow of https://gitlab.cta-observatory.org/cta-computing/dpps/CTADIRAC/-/blob/master/Interfaces/API/Prod5Stage1Job.py