CGNS: Fix CGNSGetSolutionTime
Fix PetscViewerCGNSGetSolutionTime()
when the CGNS "solution" index does not match the "FlowSolutionPointers" index (CGNS treats every problem-sized field as a "solution")
Fix PetscViewerCGNSGetSolutionTime()
when the CGNS "solution" index does not match the "FlowSolutionPointers" index (CGNS treats every problem-sized field as a "solution")