fix(SU2_PY,SU2_CFD): Fix division-by-zero and logic bugs by shbhmexe · Pull Request #2654

fix(SU2_PY,SU2_CFD): Fix division-by-zero and logic bugs by shbhmexe · Pull Request #2654 · su2code/SU2

1 SU2_PY/SU2/io/tools.py expand_time() loses multi-zone filenames Use extend() instead of reassignment 2 SU2_PY/SU2/eval/gradients.py Wrong key check (RESTART_FILE_1 vs _2) Check correct key before access 3 SU2_CFD/.../flow_diffusion.cpp Division by zero in AddTauWall fmax(WallShearStress, EPS) 4 SU2_CFD/.../CRadP1Solver.cpp Division by zero in SetTime_Step fmax(Absorption + Scattering, EPS)