In current develop branch, we forgot to call nr_ue_pusch_common_procedures() in nr_ulsim.
This means there was no actual PUSCH transmission and all LLR were 0.
Unfortunately, this was decoded and reported as valid. This is why it was not detectet in CI.
So in this MR, Parminder fixed this issue and also enabled the check for no PUSCH signal in nr_ulsim, so this kind of error should not slip through that easy anymore...