Converged cdn.hdf leads hybrids to fail
If I start a hybrid calculation with a fully converged PBE cdn.hdf, so PBE iteration is performed
enpara%el0(l, itype, jspin) and
vr0(:,itype, jspin) in https://iffgit.fz-juelich.de/fleur/fleur/-/blob/develop/hybrid/mixedbasis.F90#L434 are not set.
We need to either a) ensure at least one PBE iteration is performed at the start b) set those 2 before we setup the mixed product basis.