[cc] Internal Dirichlet uses deflected value of elemSol

When enforcing an internal Dirichlet constraint, we set

origResiduals[0][eqIdx] = this->curElemVolVars()[scv].priVars()[eqIdx] - dirichletValues[eqIdx];

The problem here is that the elemVolVars are still deflected and only get re-set after the internal constraints are dealt with.